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CN105777872B - A kind of purification process of Sa Molu peptide - Google Patents

A kind of purification process of Sa Molu peptide Download PDF

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Publication number
CN105777872B
CN105777872B CN201410784130.9A CN201410784130A CN105777872B CN 105777872 B CN105777872 B CN 105777872B CN 201410784130 A CN201410784130 A CN 201410784130A CN 105777872 B CN105777872 B CN 105777872B
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peptide
solution
molu
chromatographic column
acetonitrile
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CN105777872A (en
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尹传龙
康旭
宓鹏程
刘建
马亚平
袁建成
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Hybio Pharmaceutical Co Ltd
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Hybio Pharmaceutical Co Ltd
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Abstract

The invention belongs to field of pharmaceutical chemistry technology, disclose a kind of purification process of Sa Molu peptide.The purification process includes: to take Sa Molu peptide sample to be purified, is separated through chemical bonding silica gel chromatographic column first, carries out gradient elution with A1 solution and the mixed solution of B solution, collects elution fraction, obtain first time purified;First time purified is taken, is separated through chemical bonding silica gel chromatographic column second, gradient elution is carried out with A2 solution and the mixed solution of B solution, collects elution fraction, get Sa Molu peptide solution;A1 solution is carbonate solution;A2 solution is phosphate solution;B solution is the mixed solution of acetonitrile and isopropanol, and the ratio between acetonitrile and the volume of isopropanol are (8:2)~(9:1).The Sa Molu peptide purity is high that the purification process prepares, significantly improves the yield of Sa Molu peptide, and easy to operate, is advantageously implemented the prepare with scale of Sa Molu peptide.

Description

A kind of purification process of Sa Molu peptide
Technical field
The invention belongs to field of pharmaceutical chemistry technology, in particular to a kind of purification process of Sa Molu peptide.
Background technique
Diabetes are a series of a kind of clinical syndromes because caused by internal insulin is absolute or relative deficiency, with something lost Passing gene has very close association.The main clinical manifestation of diabetes is more drinks, diuresis, eat and weight loss more, and Contain glucose etc. in blood glucose height, urine.Diabetes are divided into four seed types: Type I diabetes, type II diabetes, other types sugar Urine disease and gestational diabetes.Any kind of diabetes can all cause the β cell in pancreas that cannot generate enough insulin To reduce the concentration of blood glucose, lead to the generation of hyperglycemia.World Health Organization's report in 2011 points out that the whole world has 3.46 Hundred million people suffer from diabetes, are estimated to be 3,400,000 people within 2004 and die of disease caused by hyperglycemia, the Diabetes Death hair more than 80% Life is in low income and middle income country.
Type II diabetes is once called as Non-Insulin Dependent Diabetes Mellitus (NIDDM) or adult onset diabetes (adult- Onset diabetes), it is a kind of metabolic disease, it is characterized in that hyperglycemia, mainly opposite by insulin resistance and insulin Shortage causes.Wherein, patients with NIDDM accounts for 90% or so in diabetic, remaining 10% predominantly Type I diabetes With gestational diabetes, so the research and development of drug for type II diabetes have a very important significance.
Many for the antidiabetic drug type of type II diabetes, the receptor agonism element of glucagon-like peptide-1 (GLP-1) is close The hot spot studied over year.Wherein, Sa Molu peptide (semaglutide) is one of receptor agonism element of GLP-1, which is by pellet What wheat Novo Nordisk Co., Ltd developed.Sa Molu peptide can play good as a kind of subcutaneous injection formulation expendable weekly The effect of blood glucose is reduced, while also having effects that weight-reducing, chemistry is expressed as Nε26-{18-[N-(17- carboxyheptadecanoyl)-L-γ-glutamyl]-10-oxo-3,6,12,15-tetraoxa-9,18- diazaoctade canoyl}-[8-(2-amino-2-propanoic acid),34-L-arginine]human Glucagon-like peptide 1 (7-37), with structure shown in Formulas I:
Currently, the preparation method of Sa Molu peptide is mainly chemical synthesis.Since the peptide chain of Sa Molu peptide is longer, side chain contains Have longer modification, in peptide sequence containing in such as Ser synthesis process easily the amino acid of isomerization and cause in thick peptide with isomery Body impurity needs to carry out the thick peptide of Sa Molu peptide obtained by chemical synthesis further so the impurity generated in synthesis is more Purifying.However, the yield of Sa Molu peptide purification method is lower in the prior art, the purifying of Sa Molu peptide is caused to become Sa Molu One of difficult point, the bottleneck of Sa Molu peptide industrialization in peptide preparation process.It is therefore desirable to explore a kind of purifying side of Sa Molu peptide Method, to improve the yield of Sa Molu peptide.
Summary of the invention
In view of this, goal of the invention of the invention is to provide a kind of purification process of Sa Molu peptide.It is provided by the invention The purification process of Sa Molu peptide is easy to operate, improves the yield of Sa Molu peptide, and the industrialization for being more advantageous to Sa Molu peptide is raw greatly It produces.
In order to realize that goal of the invention of the invention, the present invention adopt the following technical scheme that:
The present invention provides a kind of purification process of Sa Molu peptide comprising:
Sa Molu peptide sample to be purified is taken, is separated through chemical bonding silica gel chromatographic column first, with A1 solution and B solution Mixed solution carries out gradient elution, collects elution fraction, obtains first time purified;
Gained first time purified is taken, is separated through chemical bonding silica gel chromatographic column second, with the mixing of A2 solution and B solution Solution carries out gradient elution, collects elution fraction, get Sa Molu peptide solution;
A1 solution is carbonate solution;
A2 solution is phosphate solution;
B solution be acetonitrile and isopropanol mixed solution, wherein the ratio between volume of acetonitrile and isopropanol be (8:2)~(9: 1)。
The peptide chain of Sa Molu peptide is longer, branched structure is complicated, and the impurity generated in the synthesis process is more, so needing pairing At Sa Molu peptide purified.In the present invention, by research discovery due in the peptide sequence of Sa Molu peptide contain hydrophobicity compared with Strong amino acid, it is lower to cause the solubility of Sa Molu peptide in aqueous solution, and difficult lower prop, causes damages in purification process, increases Add purifying difficulty, affects the yield of Sa Molu peptide.The present invention is by be chemically bonded silica gel as stationary phase, after loading, Gradient elution is carried out with carbonate, most of isomer impurities in Sa Molu peptide to be purified can be difficult to separate with other Impurity separation, removal;Gradient elution is carried out as mobile phase using phosphate solution later, removal is difficult to remove minute impurities simultaneously Efficiently solve the problems, such as that difficult lower prop, yield are low.Experimental result confirms that Sa Molu peptide obtained by purification process provided by the invention is pure Degree height, high income, and it is easy to operate, it is advantageously implemented the prepare with scale of Sa Molu peptide.
In some embodiments of the invention, in purification process provided by the invention, the body of acetonitrile and isopropanol in B solution The ratio between product is 8:2 or 9:1.
Preferably, in purification process provided by the invention, the concentration of carbonate solution used in the first separation process is 20mmol/L~150mmol/L.In some embodiments of the invention, in purification process provided by the invention, carbonate solution Concentration be 20mmol/L, 50mmol/L, 100mmol/L or 150mmol/L.
Preferably, in purification process provided by the invention, in the first separation process the pH value of A1 solution used be pH7.5~ pH8.5.In some embodiments of the invention, in purification process provided by the invention, the pH value of A1 solution is pH7.5, pH8.0 Or pH8.5.In other embodiment of the invention, in purification process provided by the invention, with tetramethylammonium hydroxide tune The pH value of A1 solution is saved to pH7.5~pH8.5.
Preferably, in purification process provided by the invention, the concentration of phosphate solution used in the second separation process is 20mmol/L~150mmol/L.In other embodiment of the invention, in purification process provided by the invention, phosphate The concentration of buffer is 20mmol/L, 50mmol/L, 100mmol/L or 150mmol/L.
Preferably, in purification process provided by the invention, the pH value of A2 solution used in the second separation process is pH2.0 ~pH3.0.In some embodiments of the invention, in purification process provided by the invention, the pH value of A2 solution be pH2.0, PH2.5 or pH3.0.In other embodiment of the invention, in purification process provided by the invention, it is molten that A2 is adjusted with phosphoric acid The pH to pH2.0~pH3.0 of liquid.
Preferably, in purification process provided by the invention, in the first separation process, A1 is molten in mobile phase used in gradient elution Liquid and the Volume fraction of B solution are 62%:38% → 50%:50%.
Preferably, in purification process provided by the invention, in the second separation process, in mobile phase used in gradient elution, A2 Solution and the Volume fraction of B solution are 60%:40% → 50%:50%.
Preferably, the carbon in purification process provided by the invention, in the first separation process, in mobile phase used in gradient elution Hydrochlorate is the above mixture of one or both of ammonium carbonate, ammonium hydrogen carbonate or saleratus.
Preferably, the phosphorus in purification process provided by the invention, in the second separation process, in mobile phase used in gradient elution Acid salt solution, which is that one or both of sodium dihydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate are above, to be mixed Object.
Preferably, in purification process provided by the invention, in the first separation process, flowing corresponding to elution fraction is collected A1 solution and the Volume fraction of B solution are 56%:44% → 52%:48% in phase.
Preferably, in purification process provided by the invention, in the second separation process, flowing corresponding to elution fraction is collected A2 solution and the Volume fraction of B solution are 54%:46% → 51%:49% in phase.
Preferably, in purification process provided by the invention, silica gel chromatographic column is chemically bonded used in the first separation process For C8 silica gel chromatographic column or butyl bonded silica gel chromatographic column.In some embodiments of the invention, purifying side provided by the invention In method, chemical bonding silica gel chromatographic column used in the first separation process is butyl bonded silica gel chromatographic column.
Preferably, in purification process provided by the invention, silica gel chromatographic column is chemically bonded used in the second separation process For C8 silica gel chromatographic column or butyl bonded silica gel chromatographic column.In some embodiments of the invention, purifying side provided by the invention In method, chemical bonding silica gel chromatographic column used in the second separation process is butyl bonded silica gel chromatographic column.
In the present invention, in purification process provided by the invention, silica gel color is chemically bonded used in the first separation process Chemical bonding silica gel chromatographic column used in spectrum column, the second separation process may be the same or different, and the two is independent of each other. In some embodiments of the invention, in purification process provided by the invention, silicon is chemically bonded used in the first separation process Chemical bonding silica gel used in glue chromatographic column, the second separation process is identical.
In some embodiments of the invention, in purification process provided by the invention, change used in the first separation process Learn bonded silica gel chromatographic column specification include:
5cm × 25cm (pillar diameter × length), 10cm × 25cm (pillar diameter × length), 15cm × 25cm (pillar Diameter × length).
In some embodiments of the invention, in purification process provided by the invention, change used in the second separation process Learn bonded silica gel chromatographic column specification include:
5cm × 25cm (pillar diameter × length), 10cm × 25cm (pillar diameter × length), 15cm × 25cm (pillar Diameter × length).
In some embodiments of the invention, in purification process provided by the invention, Sa Molu peptide sample to be purified is The Sa Molu peptide of chemical synthesis synthesis.In other embodiment of the invention, in purification process provided by the invention, to The synthetic method of the Sa Molu peptide sample of purifying is the following steps are included: first synthesizing amino acid resin, gradually coupling synthesis is led later Then chain peptide resin removes the protecting group of Lys side chain, then be gradually coupled the amino acid and other groups of side chain, finally cutting tree Rouge obtains the thick peptide of Sa Molu peptide, that is, obtains Sa Molu peptide sample to be purified.
In some embodiments of the invention, it in purification process provided by the invention, is taken in the first separation process to be purified Sa Molu peptide sample carry out loading before further include with acetonitrile solution rinse chemical bonding silica gel chromatographic column.Of the invention In some embodiments, in purification process provided by the invention, in the first separation process, when rinsing chemical bonding silica gel chromatographic column, The percent by volume of acetonitrile is 50%~80% in acetonitrile solution used.
In other embodiment of the invention, in purification process provided by the invention, is taken in the second separation process Purified carries out further including rinsing chemical bonding silica gel chromatographic column with acetonitrile solution before loading.It is of the invention in addition In some embodiments, in purification process provided by the invention, in the second separation process, when rinsing chemical bonding silica gel chromatographic column, The percent by volume of acetonitrile is 50%~80% in acetonitrile solution used.
Preferably, in purification process provided by the invention, further include the steps that into salt, which specifically includes:
Take gained Sa Molu peptide solution, to be chemically bonded silica gel chromatographic column as stationary phase, after loading, through at salt, elute, Collect elution fraction, get Sa Molu peptide salt;
Wherein, the mixed solution for eluting that mobile phase used is water and acetonitrile for gradient elution, acetonitrile in the solution are eluted Volume fraction be gradually increased.
In some embodiments of the invention, in purification process provided by the invention, in salt-forming steps, it is chemically bonded silica gel Chromatographic column is C8 silica gel chromatographic column or butyl bonded silica gel chromatographic column.In other embodiment of the invention, the present invention is mentioned In the purification process of confession, in salt-forming steps, chemical bonding silica gel chromatographic column is butyl bonded silica gel chromatographic column.
In some embodiments of the invention, in purification process provided by the invention, chemical bond used in salt-forming steps Close silica gel chromatographic column specification include:
5cm × 25cm (pillar diameter × length), 10cm × 25cm (pillar diameter × length), 15cm × 25cm (pillar Diameter × length).
In the present invention, the chemical bonding silica gel chromatographic column used in the process of Sa Molu peptide salt-forming steps, separates with first Used in the process of chemical bonding silica gel chromatographic column, chemical bonding silica gel chromatographic column can phase used in the second separation process Together, it can also be different.
In other embodiment of the invention, in purification process provided by the invention, in salt-forming steps, at used in salt Solution be acetonitrile and ammonium acetate mixed solution.In other embodiment of the invention, purifying side provided by the invention In method, in salt-forming steps, in the mixed solution at acetonitrile used in salt, ammonium acetate and water, the percentage by volume of acetonitrile is 5%; The percentage by volume of ammonium acetate is 0.1%~0.4%.In other embodiment of the invention, purifying provided by the invention In method, in salt-forming steps, the pH value at the mixed solution of acetonitrile used in salt, ammonium acetate and water is pH6.5~pH7.0.
In other embodiment of the invention, in purification process provided by the invention, in salt-forming steps, before loading Further include the steps that rinsing chemical bonding silica gel chromatographic column with acetonitrile solution.In other embodiment of the invention, this It invents in the purification process provided, acetonitrile solution used in chemical bonding silica gel chromatographic column is rinsed in salt-forming steps, before loading The percentage by volume of middle acetonitrile is 50%~80%.
In other embodiment of the invention, in purification process provided by the invention, in salt-forming steps, used in elution Mobile phase in the Volume fraction of water and acetonitrile be 60%:40% → 40%:60%.
In other embodiment of the invention, in purification process provided by the invention, in salt-forming steps, elution is collected The Volume fraction of water and acetonitrile is 65%:35% → 45%:55% in mobile phase corresponding to component.
The present invention provides a kind of purification process of Sa Molu peptide.The purification process includes: to take Sa Molu peptide to be purified Sample, separates through chemical bonding silica gel chromatographic column first, carries out gradient elution with A1 solution and the mixed solution of B solution, collects Elution fraction obtains first time purified;First time purified is taken, is separated through chemical bonding silica gel chromatographic column second, with A2 solution Gradient elution is carried out with the mixed solution of B solution, collects elution fraction, get Sa Molu peptide solution;A1 solution is carbonate solution; A2 solution is phosphate solution;B solution is the mixed solution of acetonitrile and isopropanol, the ratio between volume of acetonitrile and isopropanol for (8: 2)~(9:1).Experimental result confirms that the Sa Molu peptide purity is high that purification process provided by the invention prepares significantly improves The yield of Sa Molu peptide, and it is easy to operate, it is advantageously implemented the prepare with scale of Sa Molu peptide.
Detailed description of the invention
Fig. 1 shows the qualification result of the thick peptide of Sa Molu peptide in embodiment 1;
Fig. 2 shows the testing result of the HPLC of the thick peptide of Sa Molu peptide in embodiment 1, wherein peak T is Sa Molu peptide;
Fig. 3 shows the Mass Spectrometer Method result of gained white powdery solids in embodiment 1;
Fig. 4 shows the testing result of the HPLC of gained Sa Molu peptide salt in embodiment 1;
Fig. 5 shows the testing result of the HPLC of gained Sa Molu peptide salt in embodiment 2;
Fig. 6 shows the testing result of the HPLC of gained Sa Molu peptide salt in embodiment 3;
Fig. 7 shows the testing result of the HPLC of gained Sa Molu peptide salt in embodiment 4;
Fig. 8 shows the testing result of the HPLC of gained Sa Molu peptide salt in embodiment 5;
Fig. 9 shows the testing result of the HPLC of gained Sa Molu peptide salt in embodiment 6;
Figure 10 shows the testing result of the HPLC of gained Sa Molu peptide salt in embodiment 7;
Figure 11 shows the testing result of the HPLC of gained Sa Molu peptide salt in embodiment 8;
Figure 12 shows the testing result of the HPLC of gained Sa Molu peptide salt in comparative example.
Specific embodiment
The invention discloses a kind of purification process of Sa Molu peptide.Those skilled in the art can refer to present disclosure, real Apply this method, it is accordingly required in particular to, it is noted that all similar substitutions and modifications are apparent for a person skilled in the art , they are considered as being included in the present invention.Purification process of the invention is described by preferred embodiment, Related personnel can obviously not depart from the content of present invention, be modified in spirit and scope to methods herein and application or suitably Changes and combinations carry out implementation and application the technology of the present invention.
Used reagent and raw material are available on the market in a kind of purification process of Sa Molu peptide provided by the invention.
In order to make those skilled in the art better understood when technical solution of the present invention, below with reference to implementation Example, the present invention is further explained:
The purifying of the thick peptide of 1: Sa Molu peptide of embodiment
Experimental material source: chromatographic column brand Kromasil;Ammonium hydrogen carbonate is purchased from Sinopharm Chemical Reagent Co., Ltd.; Tetramethylammonium hydroxide is purchased from Aladdin;Sodium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong Brilliance Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
Butyl bonded silica gel chromatographic column: Kromasil--C4-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): company voluntarily synthesizes.
Synthetic method specifically:
It uses Fmoc-Gly- Wang Shuzhi for initial resin, is added in solid phase reaction column, is washed 2 times with DMF, be swollen with DMF After Fmoc-Gly- Wang Shuzhi 30 minutes, with DBLK removing Fmoc protection, then washed 4 times with DMF, DCM is washed 2 times, uses ninhydrin Method detects color of resin, and resin has color, indicates that Fmoc has been removed.Weigh suitable Fmoc-Arg (Pbf)-OH, HOBt (1.8mmol), PyBOP are dissolved in DCM the and DMF mixed solution that volume ratio is 1 ︰ 1, and DIPEA is added under ice-water bath and activates 3min It is added in solid phase reaction column, reacts at room temperature 2 hours afterwards.Reaction end is judged with ninhydrin method detection, if resin is colorless and transparent, Then indicate fully reacting, this judgment criteria judges reaction end suitable for subsequent content with ninhydrin method detection.
It repeats above-mentioned removing Fmoc protection and the step of corresponding amino acid is coupled is added, according to Sa Molu peptide backbone Peptide sequence is sequentially completed Fmoc-Gly-OH, Fmoc-Arg (Pbf)-OH, Fmoc-Val-OH, Fmoc-Leu-OH, Fmoc-Trp (Boc)-OH、Fmoc-Ala-OH、Fmoc-Ile-OH、Fmoc-Phe-OH、Fmoc-Glu(OtBu)-OH、Fmoc-Lys (Alloc)-OH、Fmoc-Ala-OH、Fmoc-Ala-OH、Fmoc-Gln(Trt)-OH、Fmoc-Gly-OH、Fmoc-Glu (OtBu)-OH、Fmoc-Leu-OH、Fmoc-Tyr(tBu)-OH、Fmoc-Ser(tBu)-OH、Fmoc-Ser(tBu)-OH、 Fmoc-Val-OH、Fmoc-Asp(OtBu)-OH、Fmoc-Ser(tBu)-OH、Fmoc-Thr(tBu)-OH、Fmoc-Phe-OH、 Fmoc-Thr (tBu)-OH, Fmoc-Gly-OH, Fmoc-Glu (OtBu)-OH, Fmoc-Ala-OH and Boc-His (Trt)-OH Coupling.
Methylene chloride is solvent, adds appropriate phenyl silane, reacts 3 minutes, adds Pd (PPh3)4, room temperature reaction 45 Minute, reaction solution is taken out, detects color of resin with ninhydrin method, resin has color, indicates that Alloc has been removed.
Appropriate Fmoc-AEEA-OH, PyBOP, HOBt are weighed, is dissolved with DMF, DIPEA is added under ice-water bath and activates 3 minutes, Reaction column is added to react 2 hours, reaction end is judged with ninhydrin method detection.Reaction terminates, and DBLK removes Fmoc, DMF washing 6 It is secondary.Same method is coupled Fmoc-AEEA-OH, Fmoc-Glu-OtBu, octadecane diacid again, is received after reaction with methanol Contracting, is dried in vacuum overnight, obtains peptide resin.
Obtained peptide resin, is added in reaction kettle, by the volume of 5 ︰ of TFA ︰ benzene first Liu Mi ︰ Ben Jia Mi ︰ EDT=90 ︰, 2 ︰ 3 Than preparing lytic reagent, lytic reagent is poured into peptide resin, is reacted at room temperature 2.5 hours.Reaction terminates, and filters resin, collects Filtrate.Resin is washed with TFA, filtrate is added in anhydrous ether and precipitates by merging filtrate, centrifugation, anhydrous ether washing, and Vacuum drying, obtains thick peptide.
The qualification result of the thick peptide of Sa Molu peptide is shown in Fig. 1;Its HPLC testing result is shown in Fig. 2, and peak T is Sa Molu peptide in figure, with External standard method calculates, and wherein the content of Sa Molu peptide is 52%.
By the mixed solution of the thick peptide 2.0g acetonitrile of Sa Molu peptide, ammonium hydroxide and water (volume ratio of acetonitrile, ammonium hydroxide and water= It 15:5:80) dissolves, filter, it is spare to collect filtrate.
1, step 1: the first separation
Purification condition: chromatographic column: using butyl bonded silica gel chromatographic column as the chromatographic column of stationary phase, pillar diameter and length Are as follows: 5cm × 25cm.Mobile phase: A1 phase: 50mmol/L ammonium bicarbonate soln solution, with tetramethylammonium hydroxide tune pH to 7.5;B Phase: trifluoroacetic acid aqueous solution and isopropyl alcohol mixture (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min. Detection wavelength: 230nm.Gradient: B%:38% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 50% acetonitrile solution, applied sample amount is by 2g Sa Molu peptide Filtrate made of thick peptide.It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, purpose peak is corresponding Elution fraction are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated under conditions of water temperature is no more than 32 DEG C To about 15mg/mL to get first time purified, obtain first time purified 0.82g altogether (with the content meter of wherein peptide).
2, step 2: the second separation
Purification condition: using butyl bonded silica gel chromatographic column as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: A2 phase: 50mmol/L sodium dihydrogen phosphate ammonium hydroxide tune pH to 2.0;B phase: trifluoroacetic acid aqueous solution and isopropanol Mixed solution (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Gradient: B%:40% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 50% acetonitrile, applied sample amount is the first step resulting first Secondary purified 0.82g (with the content meter of wherein peptide).It after loading, is washed, linear gradient elution 60min.Collect mesh Peak, the corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.By the peptide solution of collection in item of the water temperature no more than 32 DEG C Vacuum rotary steam is concentrated into about 15mg/mL to get Sa Molu peptide solution under part, obtains the Sa Molu peptide of the peptide of Sa Molu containing 0.55g altogether Solution.
3, turn salt: rinsing butyl bonded silica gel chromatographic column well rear loading with 50% acetonitrile solution, applied sample amount be containing The Sa Molu peptide solution of 0.55g Sa Molu peptide rinses 30min with 0.1% ammonium acetate solution (pH 6.5) containing 5% acetonitrile. Finally carry out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min collect purpose peak, purpose The corresponding elution fraction in peak are as follows: B%:35% → 55%.The purpose peptide solution of collection is no more than at 32 DEG C in water temperature and depressurizes rotation Inspissation goes to suitable size cillin bottle after being reduced to about 40mg/mL, is freeze-dried later, obtains white powdery solids 0.41g.
Mass Spectrometer Method is carried out to gained white powdery solids, qualification result is shown in Fig. 3;Carry out HPLC detection, testing result See Fig. 4.It is found that the purity of Sa Molu peptide is 99.38% from HPLC chromatogram, single impurity is respectively less than 0.15%.Purifying is received Rate be 41% (calculation method are as follows: the quality of Sa Molu peptide in the quality of gained Sa Molu peptide salt/thick peptide of Sa Molu peptide × 100%);Total recovery is 20.5%, (calculation method are as follows: the quality of gained Sa Molu peptide salt/Sa Molu peptide thick peptide quality × 100%).
The thick peptide purification of 2: Sa Molu peptide of embodiment
Experimental material source: chromatographic column brand Kromasil;Saleratus is purchased from Sinopharm Chemical Reagent Co., Ltd.; Tetramethylammonium hydroxide is purchased from Aladdin;Potassium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong Brilliance Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
Butyl bonded silica gel chromatographic column: Kromasil--C4-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): same as Example 1, wherein Sa Molu peptide Content be 52%.
By the mixed solution of the thick peptide 2.0g acetonitrile of Sa Molu peptide, water and ammonium hydroxide (volume ratio of acetonitrile, ammonium hydroxide and water= It 15:5:80) dissolves, filter, it is spare to collect filtrate.
1, step 1: the first separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: A1 phase: 50mmol/L potassium bicarbonate solution solution, with tetramethylammonium hydroxide tune pH to 7.5;B phase: chromatography Pure acetonitrile and isopropyl alcohol mixture (the ratio between volume of acetonitrile and isopropanol is 8:2).Flow velocity: 60-80mL/min.Detect wave It is long: 230nm.Gradient: B%:38% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 80% acetonitrile solution, applied sample amount is by 2g Sa Molu peptide Filtrate made of thick peptide.It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, purpose peak is corresponding Elution fraction are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated under conditions of water temperature is no more than 32 DEG C To about 15mg/mL to get first time purified, obtain first time purified 0.88g altogether (with the content meter of wherein peptide).
2, step 2: the second separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: A2 phase: 20mmol/L potassium dihydrogen phosphate ammonium hydroxide tune pH to 3.0;B phase: trifluoroacetic acid aqueous solution and isopropanol Mixed solution (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Gradient: B%:40% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 80% acetonitrile, applied sample amount is the first step resulting first Secondary purified 0.88g (with the content meter of wherein peptide).It after loading, is washed, linear gradient elution 60min.Collect mesh Peak, the corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.By the peptide solution of collection in item of the water temperature no more than 32 DEG C Vacuum rotary steam is concentrated into about 15mg/mL to get Sa Molu peptide solution under part, and the Sa Molu peptide for obtaining the peptide of Sa Molu containing 0.5g altogether is molten Liquid.
3, turn salt: rinsing butyl bonded silica gel chromatographic column well rear loading with 80% acetonitrile solution, applied sample amount be containing The Sa Molu peptide solution of 0.5g Sa Molu peptide.15min is rinsed with 0.4% ammonium acetate solution (pH 7.0) containing 5% acetonitrile. Finally use gradient elution, carry out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min are collected Purpose peak, the corresponding elution fraction in purpose peak are as follows: B%:35% → 55%.The purpose peptide solution of collection is no more than 32 in water temperature Vacuum rotary steam goes to suitable size cillin bottle after being concentrated into about 45mg/mL at DEG C, is freeze-dried later, obtains white powder Solid 0.4g.
HPLC detection is carried out to gained white powdery solids, testing result is shown in Fig. 5, and purity 99.25% is single miscellaneous Matter is respectively less than 0.15%.Purifying yield is 40% (calculation method are as follows: in the quality of gained Sa Molu peptide salt/thick peptide of Sa Molu peptide Quality × 100% of Sa Molu peptide);Total recovery is 20.2%, (calculation method are as follows: quality/Sa Molu of gained Sa Molu peptide salt Quality × 100% of the thick peptide of peptide).
The thick peptide purification of 3: Sa Molu peptide of embodiment
Experimental material source: chromatographic column brand Kromasil;Ammonium carbonate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Four Ammonium hydroxide is purchased from Aladdin;Potassium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong light Magnificent Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
Butyl bonded silica gel chromatographic column: Kromasil--C4-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): same as Example 1, wherein Sa Molu peptide Content be 52%.
By the thick peptide 2.0g dissolution of Sa Molu peptide, filtering, it is spare to collect filtrate.
1, step 1: the first separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: A1 phase: 20mmol/L sal volatile, with tetramethylammonium hydroxide tune pH to 8.5;B phase: trifluoroacetic acid aqueous solution With isopropyl alcohol mixture (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Gradient: B%:38% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is by 2g Sa Molu peptide Filtrate made of thick peptide.It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, purpose peak is corresponding Elution fraction are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated under conditions of water temperature is no more than 32 DEG C To about 15mg/mL to get first time purified, obtain first time purified 0.75g altogether (with the content meter of wherein peptide).
2, step 2: the second separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: A2 phase: 50mmol/L potassium dihydrogen phosphate ammonium hydroxide tune pH to 2.0;B phase: trifluoroacetic acid aqueous solution and isopropanol Mixed solution (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Gradient: B%:40% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is that the first step is resulting First time purified 0.75g (with the content meter of wherein peptide).It after loading, is washed, linear gradient elution 60min.It receives Ji Mufeng, the corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.The peptide solution of collection is no more than 32 DEG C in water temperature Under conditions of vacuum rotary steam be concentrated into about 15mg/mL to get Sa Molu peptide solution, obtain the Sa Mo of the peptide of Sa Molu containing 0.62g altogether Shandong peptide solution.It carries out turning salt.
3, turn salt: rinsing butyl bonded silica gel chromatographic column well rear loading with 75% acetonitrile solution, applied sample amount be containing The Sa Molu peptide solution of 0.62g Sa Molu peptide.20min is rinsed with 0.3% ammonium acetate solution (pH 6.8) containing 5% acetonitrile. Finally use gradient elution, carry out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min are collected Purpose peak, the corresponding elution fraction in purpose peak are as follows: B%:35% → 55%.The purpose peptide solution of collection is no more than 32 in water temperature Vacuum rotary steam goes to suitable size cillin bottle after being concentrated into about 45mg/mL at DEG C, is freeze-dried later, obtains white powder Solid 0.5g.
HPLC detection is carried out to gained white powdery solids, testing result is shown in Fig. 6, and purity 99.38% is single miscellaneous Matter is respectively less than 0.15%.Purifying yield is 50% (calculation method are as follows: in the quality of gained Sa Molu peptide salt/thick peptide of Sa Molu peptide Quality × 100% of Sa Molu peptide);Total recovery is 25%, (calculation method are as follows: quality/Sa Molu peptide of gained Sa Molu peptide salt Quality × 100% of thick peptide).
The thick peptide purification of 4: Sa Molu peptide of embodiment
Experimental material source: chromatographic column brand Kromasil;Ammonium hydrogen carbonate is purchased from Sinopharm Chemical Reagent Co., Ltd.; Tetramethylammonium hydroxide is purchased from Aladdin;Sodium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong Brilliance Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
Butyl bonded silica gel chromatographic column: Kromasil--C4-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): same as Example 1, wherein Sa Molu peptide Content be 52%.
By the mixed solution of the thick peptide 2.0g acetonitrile of Sa Molu peptide, water and ammonium hydroxide (volume ratio of acetonitrile, ammonium hydroxide and water= It 15:5:80) dissolves, filter, it is spare to collect filtrate.
1, step 1: the first separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: A1 phase: 50mmol/L ammonium bicarbonate soln, with tetramethylammonium hydroxide tune pH to 8.5;B phase: chromatographically pure second Nitrile and isopropyl alcohol mixture (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Gradient: B%:38% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is by 2g Sa Molu peptide Filtrate made of thick peptide.It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, purpose peak is corresponding Elution fraction are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated under conditions of water temperature is no more than 32 DEG C To about 15mg/mL to get first time purified, obtain first time purified 0.78g altogether (with the content meter of wherein peptide).
Step 2: the second separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: A2 phase: 50mmol/L sodium dihydrogen phosphate ammonium hydroxide tune pH to 3.0;B phase: trifluoroacetic acid aqueous solution and isopropanol Mixed solution (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Gradient: B%:40% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is that the first step is resulting First time purified 0.78g (with the content meter of wherein peptide).It after loading, is washed, linear gradient elution 60min.It receives Ji Mufeng, the corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.The peptide solution of collection is no more than 32 DEG C in water temperature Under conditions of vacuum rotary steam be concentrated into about 15mg/mL to get Sa Molu peptide solution, obtain the Sa Molu of the peptide of Sa Molu containing 0.6g altogether Peptide solution carries out turning salt.
3, turn salt: rinsing butyl bonded silica gel chromatographic column well rear loading with 75% acetonitrile solution, applied sample amount be containing The Sa Molu peptide solution of 0.6g Sa Molu peptide rinses 20min with 0.2% ammonium acetate solution (pH 6.5) containing 5% acetonitrile. Finally use gradient elution, carry out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min are collected Purpose peak, the corresponding elution fraction in purpose peak are as follows: B%:35% → 55%.The purpose peptide solution of collection is no more than 32 in water temperature Vacuum rotary steam goes to suitable size cillin bottle after being concentrated into about 15mg/mL at DEG C, is freeze-dried later, obtains white powder Solid 0.45g.
HPLC detection is carried out to gained white powdery solids, testing result is shown in Fig. 7, and purity 99.30% is single miscellaneous Matter is respectively less than 0.15%.Purifying yield is 45% (calculation method are as follows: in the quality of gained Sa Molu peptide salt/thick peptide of Sa Molu peptide Quality × 100% of Sa Molu peptide);Total recovery is 22.5%, (calculation method are as follows: quality/Sa Molu of gained Sa Molu peptide salt Quality × 100% of the thick peptide of peptide).
The thick peptide purification of 5: Sa Molu peptide of embodiment
Experimental material source: chromatographic column brand Kromasil;Ammonium hydrogen carbonate is purchased from Sinopharm Chemical Reagent Co., Ltd.; Tetramethylammonium hydroxide is purchased from Aladdin;Potassium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong Brilliance Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
Butyl bonded silica gel chromatographic column: Kromasil--C4-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): same as Example 1, wherein Sa Molu peptide Content be 52%.
By the mixed solution of the thick peptide 2.0g acetonitrile of Sa Molu peptide, water and ammonium hydroxide (volume ratio of acetonitrile, ammonium hydroxide and water= It 15:5:80) dissolves, filter, it is spare to collect filtrate.
1, step 1: the first separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: 1 phase of A: 150mmol/L ammonium bicarbonate soln solution, with tetramethylammonium hydroxide tune pH to 8.0;B phase: color Compose pure acetonitrile and isopropyl alcohol mixture (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detect wave It is long: 230nm.Gradient: B%:38% → 50%, 50-70min.
Chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is made of the thick peptide of 2g Sa Molu peptide Filtrate.It after loading, is washed, linear gradient elution 60min.Collect purpose peak, the corresponding elution fraction in purpose peak are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated into about 15mg/mL under conditions of water temperature is no more than 32 DEG C, Up to first time purified, obtain first time purified 0.8g altogether (with the content meter of wherein peptide).
2, step 2: the second separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm × 25cm.Mobile phase: A2 phase: 100mmol/L dipotassium hydrogen phosphate solution ammonium hydroxide tune pH to 2.5;B phase: trifluoroacetic acid aqueous solution and isopropyl The mixed solution of alcohol (the ratio between volume of ethyl alcohol and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Ladder Degree: B%:40% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 50% acetonitrile solution, applied sample amount is that the first step is resulting First time purified 0.8g (with the content meter of wherein peptide).It after loading, is washed, linear gradient elution 60min.It collects Purpose peak, the corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.The peptide solution of collection is no more than 32 DEG C in water temperature Under the conditions of vacuum rotary steam be concentrated into about 15mg/mL to get Sa Molu peptide solution, obtain the Sa Molu of the peptide of Sa Molu containing 0.57g altogether Peptide solution carries out turning salt.
3, turn salt: rinsing butyl bonded silica gel chromatographic column well rear loading with 50% acetonitrile solution, applied sample amount be containing The Sa Molu peptide solution of 0.57g Sa Molu peptide rinses 30min with 0.4% ammonium acetate solution (pH 6.5) containing 5% acetonitrile. Last gradient elution carries out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min, collects mesh Peak, the corresponding elution fraction in purpose peak are as follows: B%:35% → 55%.The purpose peptide solution of collection is no more than 32 DEG C in water temperature Lower vacuum rotary steam goes to suitable size cillin bottle after being concentrated into about 15mg/mL, is freeze-dried later, and it is solid to obtain white powder Body 0.5g.
HPLC detection is carried out to gained white powdery solids, testing result is shown in Fig. 8, and purity 99.20% is single miscellaneous Matter is respectively less than 0.15%.Purifying yield is 50% (calculation method are as follows: in the quality of gained Sa Molu peptide salt/thick peptide of Sa Molu peptide Quality × 100% of Sa Molu peptide);Total recovery is 25%, (calculation method are as follows: quality/Sa Molu peptide of gained Sa Molu peptide salt Quality × 100% of thick peptide).
The thick peptide purification of 6: Sa Molu peptide of embodiment
Experimental material source: chromatographic column brand Kromasil;Ammonium hydrogen carbonate is purchased from Sinopharm Chemical Reagent Co., Ltd.; Tetramethylammonium hydroxide is purchased from Aladdin;Sodium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong Brilliance Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
Butyl bonded silica gel chromatographic column: Kromasil--C4-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): same as Example 1, wherein Sa Molu peptide Content be 52%.
By the mixed solution of the thick peptide 15g acetonitrile of Sa Molu peptide, water and ammonium hydroxide (volume ratio=15 of acetonitrile, ammonium hydroxide and water: It 5:80) dissolves, filter, it is spare to collect filtrate.
1, step 1: the first separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 10cm ×25cm.Mobile phase: A1 phase: 100mmol/L ammonium bicarbonate soln solution, with tetramethylammonium hydroxide tune pH to 8.0;B phase: color Compose the mixed solution of pure acetonitrile and isopropanol (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection Wavelength: 230nm.Gradient: B%:38% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is by 15g Sa Molu peptide Filtrate made of thick peptide.It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, purpose peak is corresponding Elution fraction are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated under conditions of water temperature is no more than 32 DEG C To about 15mg/mL to get first time purified, obtain first time purified 6g altogether (with the content meter of wherein peptide).
2, step 2: the second separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 10cm ×25cm.Mobile phase: A2 phase: 100mmol/L sodium dihydrogen phosphate, with ammonium hydroxide tune pH to 2.5;B phase: trifluoroacetic acid aqueous solution with it is different The mixed solution of propyl alcohol (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm. Gradient: B%:40% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 80% acetonitrile, applied sample amount is first time obtained by the first step Purified 6g (with the content meter of wherein peptide).It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, The corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.By the peptide solution of collection under conditions of water temperature is no more than 32 DEG C Vacuum rotary steam is concentrated into about 15mg/mL to get Sa Molu peptide solution, obtains the Sa Molu peptide solution of the peptide of Sa Molu containing 4.8g altogether, It carries out turning salt.
3, turn salt: rinsing butyl bonded silica gel chromatographic column well rear loading with 80% acetonitrile solution, applied sample amount be containing The Sa Molu peptide of 4.8g Sa Molu peptide is molten, rinses 15min with 0.4% ammonium acetate solution (pH 7.0) containing 5% acetonitrile, most Use gradient elution afterwards, carry out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min collect mesh Peak, the corresponding elution fraction in purpose peak are as follows: B%:35% → 55%.The purpose peptide solution of collection is no more than 32 DEG C in water temperature Lower vacuum rotary steam goes to suitable size cillin bottle after being concentrated into about 45mg/mL.It is freeze-dried later, it is solid to obtain white powder Body 4.2g.
HPLC detection is carried out to gained white powdery solids, testing result is shown in Fig. 9, and purity 99.38% is single miscellaneous Matter is respectively less than 0.15%.Purifying yield is 53.8% (calculation method are as follows: the quality of the gained Sa Molu peptide salt/thick peptide of Sa Molu peptide Quality × 100% of middle Sa Molu peptide);Total recovery is 28%, (calculation method are as follows: quality/Sa Molu of gained Sa Molu peptide salt Quality × 100% of the thick peptide of peptide).
The thick peptide purification of 7: Sa Molu peptide of embodiment
Experimental material source: chromatographic column brand Kromasil;Ammonium hydrogen carbonate is purchased from Sinopharm Chemical Reagent Co., Ltd.; Tetramethylammonium hydroxide is purchased from Aladdin;Potassium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong Brilliance Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
Butyl bonded silica gel chromatographic column: Kromasil--C4-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): same as Example 1, wherein Sa Molu peptide Content be 52%.
The thick peptide 25g acetonitrile of Sa Molu peptide, water and ammonium hydroxide (volume ratio=15:5:80 of acetonitrile, ammonium hydroxide and water) are dissolved, It is spare to collect filtrate for filtering.
1, step 1: the first separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 15cm ×25cm.Mobile phase: A1 phase: 100mmol/L ammonium bicarbonate soln solution, with tetramethylammonium hydroxide tune pH to 8.0;B phase: color Compose pure acetonitrile and isopropyl alcohol mixture (the ratio between volume of ethyl alcohol and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detect wave It is long: 230nm.Gradient: B%:38% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is by 25g Sa Molu peptide Filtrate made of thick peptide.It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, purpose peak is corresponding Elution fraction are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated under conditions of water temperature is no more than 32 DEG C To about 15mg/mL to get first time purified, obtain first time purified 10g altogether (with the content meter of wherein peptide).
2, step 2: the second separation
Purification condition: chromatographic column: using butyl bonded silica gel as the chromatographic column of stationary phase, pillar diameter and length are as follows: 15cm ×25cm.Mobile phase: A2 phase: 150mmol/L potassium dihydrogen phosphate ammonium hydroxide tune pH to 2.5;B phase: trifluoroacetic acid aqueous solution and different Propyl alcohol mixed solution (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Ladder Degree: B%:40% → 50%, 50-70min.Sample volume is 20-30g.
Purification process: chromatographic column is rinsed well rear loading with 60% acetonitrile, applied sample amount is first time obtained by the first step Purified 10g (with the content meter of wherein peptide).It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, The corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.By the peptide solution of collection under conditions of water temperature is no more than 32 DEG C Vacuum rotary steam is concentrated into about 15mg/mL to get Sa Molu peptide solution, obtains the Sa Molu peptide solution of the peptide of Sa Molu containing 8.1g altogether, It carries out turning salt.
3, turn salt: rinsing butyl bonded silica gel chromatographic column well rear loading with 60% acetonitrile solution, applied sample amount be containing The Sa Molu peptide solution of 8.1g Sa Molu peptide rinses 30min with 0.4% ammonium acetate solution (pH 6.8) containing 5% acetonitrile, Finally use gradient elution, carry out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min are collected Purpose peak, the corresponding elution fraction in purpose peak are as follows: B%:35% → 55%.The purpose peptide solution of collection is no more than 32 in water temperature Vacuum rotary steam goes to suitable size cillin bottle after being concentrated into about 40mg/mL under conditions of DEG C.It is freeze-dried, is obtained white later Pulverulent solids 7.4g.
HPLC detection is carried out to gained white powdery solids, testing result is shown in Figure 10, purity 99.45%, individually Impurity is respectively less than 0.15%.Purifying yield is 56% (calculation method are as follows: the weight of the gained Sa Molu peptide salt/thick peptide of Sa Molu peptide Quality × 100% of middle Sa Molu peptide);Total recovery is 29.6%, (calculation method are as follows: quality/Sa Mo of gained Sa Molu peptide salt Quality × 100% of the thick peptide of Shandong peptide).
The thick peptide purification of 8: Sa Molu peptide of embodiment
Experimental material source: chromatographic column brand Kromasil;Ammonium hydrogen carbonate is purchased from Sinopharm Chemical Reagent Co., Ltd.; Tetramethylammonium hydroxide is purchased from Aladdin;Sodium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong Brilliance Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
C8 silica gel chromatographic column: Kromasil--C8-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): same as Example 1, wherein Sa Molu peptide Content be 52%.
The thick peptide 15g acetonitrile of Sa Molu peptide, water and ammonium hydroxide (volume ratio=15:5:80 of acetonitrile, ammonium hydroxide and water) are dissolved, It is spare to collect filtrate for filtering.
1, step 1: the first separation
Purification condition: chromatographic column: using C8 silica gel chromatographic column as the chromatographic column of stationary phase, pillar diameter and length are as follows: 10cm ×25cm.Mobile phase: A1 phase: 100mmol/L ammonium bicarbonate soln solution, with tetramethylammonium hydroxide tune pH to 8.0;B phase: color Compose the mixed solution of pure acetonitrile and isopropanol (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection Wavelength: 230nm.Gradient: B%:38% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is by 15g Sa Molu peptide Filtrate made of thick peptide.It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, purpose peak is corresponding Elution fraction are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated under conditions of water temperature is no more than 32 DEG C To about 15mg/mL to get first time purified, obtain first time purified 5g altogether (with the content meter of wherein peptide).
2, step 2: the second separation
Purification condition: chromatographic column: using C8 silica gel chromatographic column as the chromatographic column of stationary phase, pillar diameter and length are as follows: 10cm ×25cm.Mobile phase: A2 phase: 20mmol/L sodium dihydrogen phosphate, with ammonium hydroxide tune pH to 2.5;B phase: trifluoroacetic acid aqueous solution with it is different The mixed solution of propyl alcohol (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm. Gradient: B%:40% → 50%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 80% acetonitrile, applied sample amount is first obtained by the first step Secondary purified 5g (with the content meter of wherein peptide).It after loading, is washed, linear gradient elution 60min.Finally, carrying out Elution, linear gradient elution 60min collect purpose peak, the corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.It will receive The peptide solution collected vacuum rotary steam under conditions of water temperature is no more than 32 DEG C is concentrated into about 15mg/mL to get Sa Molu peptide solution, altogether The Sa Molu peptide solution of the peptide of Sa Molu containing 3.2g is obtained, it is spare.
3, turn salt: rinsing C8 silica gel chromatographic column column well rear loading with 80% acetonitrile solution, applied sample amount is containing 3.2g The Sa Molu peptide solution of Sa Molu peptide rinses 15min with 0.4% ammonium acetate solution (pH 7.0) containing 5% acetonitrile, finally With gradient elution, carry out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min collect purpose Peak, the corresponding elution fraction in purpose peak are as follows: B%:35% → 55%.The purpose peptide solution of collection is no more than at 32 DEG C in water temperature Vacuum rotary steam goes to suitable size cillin bottle after being concentrated into about 45mg/mL.It is freeze-dried later, obtains white powdery solids 2.3g。
HPLC detection is carried out to gained white powdery solids, testing result is shown in Figure 11, and purity 99.28%% is single A impurity is respectively less than 0.15%.Purifying yield is 29% (calculation method are as follows: quality/Sa Molu peptide of gained Sa Molu peptide salt is thick Quality × 100% of Sa Molu peptide in peptide);Total recovery is 15.3%, (calculation method are as follows: quality/Sa of gained Sa Molu peptide salt Rub quality × 100% of the thick peptide of Shandong peptide).
Comparative example
Experimental material source: chromatographic column brand Kromasil;Ammonium hydrogen carbonate is purchased from Sinopharm Chemical Reagent Co., Ltd.; Tetramethylammonium hydroxide is purchased from Aladdin;Sodium dihydrogen phosphate is purchased from Sinopharm Chemical Reagent Co., Ltd.;Ammonium hydroxide is purchased from Guangdong Brilliance Science and Technology Co., Ltd.;Glacial acetic acid is purchased from Guangdong Guanghua Science and Technology Co., Ltd..
Octadecyl silane: Kromasil--C18-10μm;
The source of the thick peptide of Sa Molu peptide (Sa Molu peptide sample i.e. to be purified): same as Example 1, wherein Sa Molu peptide Content be 52%.
The thick peptide 2.0g acetonitrile of Sa Molu peptide, water and ammonium hydroxide (volume ratio=15:5:80 of acetonitrile, ammonium hydroxide and water) is molten Solution, filtering, it is spare to collect filtrate.
1, step 1: the first separation
Purification condition: chromatographic column: using octadecyl silane as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm×25cm.Mobile phase: A1 phase: 150mmol/L ammonium bicarbonate soln solution, with tetramethylammonium hydroxide tune pH to 8.0;B Phase: trifluoroacetic acid aqueous solution and isopropyl alcohol mixture (the ratio between volume of acetonitrile and isopropanol is 9:1).Flow velocity: 60-80mL/min. Detection wavelength: 230nm.Gradient: B%:40% → 55%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 75% acetonitrile solution, applied sample amount is by 2g Sa Molu peptide Filtrate made of thick peptide.It after loading, is washed, linear gradient elution 60min.Purpose peak is collected, purpose peak is corresponding Elution fraction are as follows: B%:44% → 48%.By the peptide solution of collection, vacuum rotary steam is concentrated under conditions of water temperature is no more than 32 DEG C To about 15mg/mL to get first time purified, obtain first time purified 0.5g altogether (with the content meter of wherein peptide).
2, step 2: the second separation
Purification condition: chromatographic column: using octadecyl silane as the chromatographic column of stationary phase, pillar diameter and length are as follows: 5cm×25cm.Mobile phase: A2 phase: 100mmol/L sodium dihydrogen phosphate ammonium hydroxide tune pH to 2.5;B phase: trifluoroacetic acid aqueous solution and The mixed solution of isopropanol (the ratio between volume of ethyl alcohol and isopropanol is 9:1).Flow velocity: 60-80mL/min.Detection wavelength: 230nm.Gradient: B%:42% → 52%, 50-70min.
Purification process: chromatographic column is rinsed well rear loading with 50% acetonitrile solution, applied sample amount is what the first step obtained 0.5g first time purified (with the content meter of peptide therein).It after loading, is washed, linear gradient elution 60min.It receives Ji Mufeng, the corresponding elution fraction in purpose peak are as follows: B%:46% → 49%.The peptide solution of collection is no more than 32 DEG C in water temperature Under conditions of vacuum rotary steam be concentrated into about 15mg/mL to get Sa Molu peptide solution, obtain the Sa Molu of the peptide of Sa Molu containing 0.4g altogether Peptide solution carries out turning salt.
3, turn salt: rinsing butyl bonded silica gel chromatographic column well rear loading with 50% acetonitrile solution, applied sample amount be containing The Sa Molu peptide solution of 0.4g Sa Molu peptide rinses 30min with 0.4% ammonium acetate solution (pH 6.5) containing 5% acetonitrile. Last gradient elution carries out gradient elution with water and acetonitrile, wherein acetonitrile gradient: B%:40% → 60%, 40min, collects mesh Peak, by the purpose peptide solution of collection in water temperature be no more than after vacuum rotary steam is concentrated into about 15mg/mL at 32 DEG C go to it is suitable big Small cillin bottle, is freeze-dried later, obtains white powdery solids 0.2g.
HPLC detection is carried out to gained white powdery solids, testing result is shown in Figure 12, and purity 98.2% is single miscellaneous Matter is respectively less than 0.3%.Purifying yield is 20% (calculation method are as follows: Sa in the quality of gained Sa Molu peptide salt/thick peptide of Sa Molu peptide Rub quality × 100% of Shandong peptide);Total recovery is 10%, (calculation method are as follows: quality/Sa Molu peptide of gained Sa Molu peptide salt is thick Quality × 100% of peptide).
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change It also should be regarded as protection scope of the present invention into retouching.

Claims (2)

1. a kind of purification process of Sa Molu peptide, characterized in that it comprises:
Sa Molu peptide sample to be purified is taken, is separated through chemical bonding silica gel chromatographic column first, with the mixing of A1 solution and B solution Solution carries out gradient elution, collects elution fraction, obtains first time purified;
The first time purified is taken, is separated through chemical bonding silica gel chromatographic column second, with the mixed solution of A2 solution and B solution Gradient elution is carried out, elution fraction, get Sa Molu peptide solution are collected;
The A1 solution is carbonate solution;
The A2 solution is phosphate solution;
The B solution is the mixed solution of acetonitrile and isopropanol, the ratio between volume of the acetonitrile and isopropanol for (8:2)~(9: 1);
The concentration of the carbonate solution is 20mmol/L~150mmol/L;
The pH value of the A1 solution is 7.5~8.5;
The concentration of the phosphate solution is 20mmol/L~150mmol/L;
The pH value of the A2 solution is 2.0~3.0;
In first separation, in mobile phase used in the gradient elution, the Volume fraction of the A1 solution and the B solution For 62%:38% → 50%:50%;
In second separation, in mobile phase used in the gradient elution, the Volume fraction of the A2 solution and the B solution For 60%:40% → 50%:50%;
In second separation, the body for collecting A2 solution and the B solution described in mobile phase corresponding to elution fraction Fraction ratio is 54%:46% → 51%:49%;
In second separation, the chemical bonding silica gel chromatographic column is C8 silica gel chromatographic column or butyl bonded silica gel chromatographic column.
2. purification process according to claim 1, which is characterized in that further include the steps that into salt, specifically:
The Sa Molu peptide solution is taken, to be chemically bonded silica gel chromatographic column as stationary phase, after loading, through collecting at salt, elution Elution fraction, get Sa Molu peptide salt;
The elution is gradient elution, and mobile phase used in the elution is the mixed solution of water and acetonitrile, the body of the acetonitrile Fraction is gradually increased.
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