[go: up one dir, main page]

CN108452848B - Catalyst - Google Patents

Catalyst Download PDF

Info

Publication number
CN108452848B
CN108452848B CN201810236234.4A CN201810236234A CN108452848B CN 108452848 B CN108452848 B CN 108452848B CN 201810236234 A CN201810236234 A CN 201810236234A CN 108452848 B CN108452848 B CN 108452848B
Authority
CN
China
Prior art keywords
catalyst
propionitrile
reaction
primary amine
cinchona alkaloid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810236234.4A
Other languages
Chinese (zh)
Other versions
CN108452848A (en
Inventor
刘可
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai lanli Biotechnology Co., Ltd
Original Assignee
Shanghai Lanli Biotechnology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Lanli Biotechnology Co Ltd filed Critical Shanghai Lanli Biotechnology Co Ltd
Priority to CN201810236234.4A priority Critical patent/CN108452848B/en
Publication of CN108452848A publication Critical patent/CN108452848A/en
Application granted granted Critical
Publication of CN108452848B publication Critical patent/CN108452848B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D417/00Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/06Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0234Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
    • B01J31/0235Nitrogen containing compounds
    • B01J31/0244Nitrogen containing compounds with nitrogen contained as ring member in aromatic compounds or moieties, e.g. pyridine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/19Catalysts containing parts with different compositions
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B53/00Asymmetric syntheses
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D249/00Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
    • C07D249/02Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
    • C07D249/081,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D405/00Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/14Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing three or more hetero rings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2231/00Catalytic reactions performed with catalysts classified in B01J31/00
    • B01J2231/30Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
    • B01J2231/32Addition reactions to C=C or C-C triple bonds
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00Indexing scheme relating to specific properties of organic compounds
    • C07B2200/07Optical isomers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Catalysts (AREA)

Abstract

The invention relates to a catalyst for the preparation of
Figure DDA0001604029790000011
Is subjected to addition reaction with propionitrile to generate
Figure DDA0001604029790000012
It is C-9 primary amine cinchona alkaloid
Figure DDA0001604029790000013
And copperylenes
Figure DDA0001604029790000014
The molar ratio of the C-9 primary amine cinchona alkaloid to copper tryptophorine is 1: 1. realizes the asymmetric addition of propionitrile and breaks through the existing defects.

Description

Catalyst
The invention relates to a divisional application of an invention patent with the application date of 2016, 24 and 02 and the application number of 201610099742.3 and the name of 'a preparation method of isavuconazole'.
Technical Field
The invention belongs to the field of drug synthesis, relates to a catalyst for drug synthesis, and particularly relates to a catalyst for propionitrile addition in an isavuconazole synthesis process.
Background
In recent 20 years, the prevalence of invasive fungal infections has increased dramatically due to the widespread use of hematopoietic stem cell transplantation, solid organ transplantation, tumor chemotherapy, broad-spectrum antibiotics, glucocorticoids, and immunosuppressive agents. Invasive fungal infections are mainly caused by candida and aspergillus, and susceptible people are hypoimmunity patients, and are frequently generated in the fields of blood, ICU, transplantation, respiration and infection, wherein the proportion of hematology patients, such as bone marrow transplantation, leukemia and lymphoma patients accounts for about 61%, the proportion of infection and respiration patients accounts for about 17%, and the patients mainly focus on aids, respiratory failure and hypoimmunity. The domestic clinical research shows that the incidence of invasive fungal infection in hematopoietic stem cell transplantation patients is 7-14%; invasive fungal infections in the ICU field account for 8% -15% of hospital acquired infections; ICU and transplant patients account for about 15% of the total weight, and are mostly patients with solid organ transplantation, major surgery and parenteral nutrition.
Figure BDA0001604029770000012
(isaconazole sulphate) is a water-soluble prodrug of triazole isaconazole for use in the treatment of invasive aspergillosis and invasive mucor infections in patients over 18 years of age. The isavuconazole sulfate is a prodrug of isavuconazole which is a triazole antifungal drug, and the isavuconazole inhibits synthesis of important components ergosterol of a fungal cell membrane by inhibiting 14-alpha-maltosterol demethylase in a cytochrome P450 enzyme system, so that chemical composition of the fungal cell membrane is changed, membrane function is disordered, permeability is increased, intracellular fluid overflows, and the effects of bacteriostasis and sterilization are achieved. In the existing preparation method of isavuconazole sulfate, the process steps are multiple, which means that the yield is reduced and the cost is obviously increased. If the synthesis steps can be reduced, the reaction time can be greatly reduced, thereby improving the production efficiency; and the yield can be improved, and the yield can be reduced, so that the production enterprises can be in an advantage position in market competition.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a catalyst for propionitrile addition in an isavuconazole synthesis process.
In order to achieve the purpose, the invention adopts the technical scheme that: a catalyst for use in making
Figure BDA0001604029770000011
Is subjected to addition reaction with propionitrile to generate
Figure BDA0001604029770000021
It is C-9 primary amine cinchona alkaloid
Figure BDA0001604029770000022
And copperylenes
Figure BDA0001604029770000023
The molar ratio of the C-9 primary amine cinchona alkaloid to copper tryptophineThe ratio is 1: 1.
optimally, the use method comprises the following steps: adding propionitrile, catalyst and organic solvent into a reaction container, cooling to-20-5 deg.C, and adding dropwise a solution containing propionitrile
Figure BDA0001604029770000024
And (3) carrying out reaction purification on the N, N-dimethylacetamide.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the catalyst of the invention adopts the C-9 primary amine cinchona alkaloid and the copper tryptophine to be mixed, realizes the asymmetric addition of propionitrile, and breaks through the existing defects.
Drawings
Figure 1 is a process flow diagram of the preparation method of isavuconazole of the present invention.
Detailed Description
The invention will be further explained with reference to the embodiments of the drawings.
Example 1
The invention provides a preparation method of isavuconazole, which comprises the following steps as shown in figure 1:
(a) sequentially adding 1mol of difluorophenylacetyl chloride, 1.2mol of triazole, 0.15mol of CuI, 1.5mol of potassium carbonate and 0.8L of DMF (N, N-dimethylformamide) into a reaction kettle, heating to 80 ℃, stirring for reaction for 10 hours, and detecting by TLC (thin layer chromatography) after the reaction is completed; filtering to obtain filtrate, concentrating under reduced pressure to recover DMF, and recrystallizing the residue with ethyl acetate to obtain off-white solid, namely a first product, with the yield of 73%;
(b) 4mol of propionitrile and 0.1mol of catalyst (containing 0.05mol of C-9 primary amine cinchona alkaloid with the chemical formula of
Figure BDA0001604029770000031
And 0.05mol of copper tryptophorin, of the formula
Figure BDA0001604029770000032
) 0.1mol of benzoic acid and 0.5L N, N-Dimethylacetamide (DMA), cooling to-10 ℃, stirring and dropwise adding 1mol of benzoic acid and N-dimethylacetamide0.3L N, N-dimethylacetamide solution of the first product is reacted for 8 hours at-10 ℃, after TLC detection reaction is completed, 0.3L hydrochloric acid with concentration of 1mol/L is added to quench the reaction, 0.2L ethyl acetate is used for extraction three times, organic phases are combined, dried by anhydrous sodium sulfate, decompressed and concentrated, the obtained oily matter is recrystallized by N-heptane/dichloromethane (volume ratio 1: 1), and filtered and dried to obtain white-like solid, namely the second product, yield is 80%, dr. is 97: 3;
(c) adding a mixed solvent of 1mol of a second product, 4mol of diethyl dithiophosphate, 0.6L of water and 0.6L of isopropanol into a three-neck reaction bottle, heating to 80 ℃, stirring for reacting for 20 hours, cooling to 0 ℃ after TLC detection reaction is completed, dropwise adding 0.4L of sodium bicarbonate solution with the mass concentration of 5%, extracting three solutions by using 0.3L of ethyl acetate, combining organic phases, washing the organic phases once by using 0.1L of saturated sodium bicarbonate, 0.1L of water and 0.1L of saturated saline water in sequence, drying the organic phases by using anhydrous sodium sulfate, filtering, and concentrating; recrystallizing in 0.3L isopropanol, crystallizing at 0 deg.C, stirring for 1 hr, and vacuum filtering to obtain a third product with yield of 60%;
(d) adding 1mol of the third product, 1.05mol of 2-bromo-4' -cyanoacetophenone and 0.3L of 95% ethanol (namely 95 ethanol) into a three-neck reaction flask, stirring and reacting at 60 ℃ for 2 hours, and adding a solution prepared by adding a solvent with a volume ratio of 1: 1, heating to 55 ℃, adding triethylamine to adjust the pH value to 4, cooling to 50 ℃, stirring for 0.5 hour, then cooling to room temperature for about 2 hours, stirring for 10 hours at room temperature, filtering, and filtering to obtain a filter cake, wherein the volume ratio of the filter cake to the filter cake is 1: 1, washing with a mixed solvent of water and 95% ethanol, and drying in an oven, wherein the yield is 70%.
Example 2
This example provides a method for preparing isavuconazole, which is substantially the same as that in example 1, except that: in step (b), no benzoic acid was added, the final second product yield was 75%, dr. was 95: 5.
example 3
This example provides a method for preparing isavuconazole, which is substantially the same as that in example 1, except that: in the step (b), the molar ratio of the C-9 primary amine cinchona alkaloid to the copper tryptophorine in the catalyst is 5: 1, yield of the final second product 76%, dr. was 95: 5.
example 4
This example provides a method for preparing isavuconazole, which is substantially the same as that in example 1, except that: in the step (b), the molar ratio of C-9 primary amine cinchona alkaloid to copper tryptophorine in the catalyst is 1: 5, yield of the final second product was 73%, dr. was 95: 5.
example 5
The embodiment provides a preparation method of isavuconazole, which comprises the following steps:
(a) sequentially adding 1mol of difluorophenylacetyl chloride, 1.1mol of triazole, 0.1mol of CuI, 1.2mol of potassium carbonate and 0.8L of DMF (N, N-dimethylformamide) into a reaction kettle, heating to 100 ℃, stirring for reacting for 8 hours, and detecting by TLC (thin layer chromatography) after the reaction is completed; filtering to obtain filtrate, concentrating under reduced pressure to recover DMF, and recrystallizing the residue with ethyl acetate to obtain off-white solid, i.e. a first product, with a yield of 70%;
(b) in a three-necked reaction flask, 3mol of propionitrile and 0.2mol of catalyst (containing 0.1mol of C-9 primary amine cinchona alkaloid with the chemical formula of
Figure BDA0001604029770000041
And 0.1mol of copper tryptophorin, of the formula
Figure BDA0001604029770000042
) 0.2mol of benzoic acid and 0.5 mol of LN, N-Dimethylacetamide (DMA), cooling to-10 ℃, stirring and dropwise adding a 0.3L N, N-dimethylacetamide solution containing 1mol of the first product, reacting at-5 ℃ for 8 hours, after the TLC detection reaction is completed, adding 0.3L of hydrochloric acid with the concentration of 1mol/L to quench the reaction, extracting three times with 0.2L of ethyl acetate, combining the organic phases, drying with anhydrous sodium sulfate, concentrating under reduced pressure, and mixing the obtained oily substance with N-heptane/dichloromethane (volume ratio 1: 1) recrystallization, filtration and drying to obtain an off-white solid, i.e. a second product, with a yield of 70%, dr. of 95: 5;
(c) adding a mixed solvent of 1mol of a second product, 5mol of diethyl dithiophosphate, 0.6L of water and 0.6L of isopropanol into a three-neck reaction bottle, heating to 80 ℃, stirring for reacting for 20 hours, cooling to 0 ℃ after TLC detection reaction is completed, dropwise adding 0.4L of sodium bicarbonate solution with the mass concentration of 5%, extracting three solutions by using 0.3L of ethyl acetate, combining organic phases, washing the organic phases once by using 0.1L of saturated sodium bicarbonate, 0.1L of water and 0.1L of saturated saline water in sequence, drying the organic phases by using anhydrous sodium sulfate, filtering, and concentrating; recrystallizing in 0.3L isopropanol, crystallizing at 0 deg.C, stirring for 1 hr, and vacuum filtering to obtain a third product with yield of 60%;
(d) adding 1mol of the third product, 1.1mol of 2-bromo-4' -cyanoacetophenone and 0.3L of 95% ethanol (namely 95 ethanol) into a three-neck reaction flask, stirring and reacting at 60 ℃ for 2 hours, and adding a solution prepared by adding a solvent with a volume ratio of 1: 1, heating to 70 ℃, adding triethylamine to adjust the pH value to 4, cooling to 50 ℃, stirring for 0.5 hour, then cooling to room temperature for about 2 hours, stirring for 10 hours at room temperature, filtering, and filtering to obtain a filter cake, wherein the volume ratio of the filter cake to the filter cake is 1: 1, washing with a mixed solvent of water and 95% ethanol, and drying in an oven, wherein the yield is 70%.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (2)

1. A catalyst used in combination with a cocatalyst
Figure FDA0002536574800000011
Is subjected to addition reaction with propionitrile to generate
Figure FDA0002536574800000012
The method is characterized in that: it is C-9 primary amine cinchona alkaloid
Figure FDA0002536574800000013
And copperylenes
Figure FDA0002536574800000014
The molar ratio of the C-9 primary amine cinchona alkaloid to copper tryptophorine is 1: 1; the molar ratio of the catalyst to the propionitrile to the cocatalyst is 0.1: 4: 0.1, and the cocatalyst is benzoic acid.
2. The catalyst according to claim 1, characterized in that it is used by: adding propionitrile, catalyst and organic solvent into a reaction container, cooling to-20-5 deg.C, and adding dropwise a solution containing propionitrile
Figure FDA0002536574800000015
And (3) carrying out reaction purification on the N, N-dimethylacetamide.
CN201810236234.4A 2016-02-24 2016-02-24 Catalyst Active CN108452848B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810236234.4A CN108452848B (en) 2016-02-24 2016-02-24 Catalyst

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810236234.4A CN108452848B (en) 2016-02-24 2016-02-24 Catalyst
CN201610099742.3A CN105777740B (en) 2016-02-24 2016-02-24 A kind of preparation method for the Saperconazole that ends

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201610099742.3A Division CN105777740B (en) 2016-02-24 2016-02-24 A kind of preparation method for the Saperconazole that ends

Publications (2)

Publication Number Publication Date
CN108452848A CN108452848A (en) 2018-08-28
CN108452848B true CN108452848B (en) 2020-12-11

Family

ID=56402758

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201610099742.3A Expired - Fee Related CN105777740B (en) 2016-02-24 2016-02-24 A kind of preparation method for the Saperconazole that ends
CN201810236234.4A Active CN108452848B (en) 2016-02-24 2016-02-24 Catalyst

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201610099742.3A Expired - Fee Related CN105777740B (en) 2016-02-24 2016-02-24 A kind of preparation method for the Saperconazole that ends

Country Status (1)

Country Link
CN (2) CN105777740B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107778306B (en) * 2016-08-30 2020-10-16 江苏奥赛康药业有限公司 A kind of isavuconazole compound and preparation method thereof
CN109206421A (en) * 2017-07-03 2019-01-15 上海医药集团股份有限公司 A kind of Chinese mugwort Saperconazole crystal form and preparation method thereof
MX2020009041A (en) 2018-03-06 2020-10-14 Upl Ltd A process for preparation of fungicidally active triazole compounds.
CN110551064B (en) * 2018-06-01 2021-01-01 重庆世森医药科技有限公司 Preparation method of isavuconazole sulfate and intermediate thereof
CN109535091B (en) * 2018-12-04 2022-05-13 淮安国瑞化工有限公司 Method for synthesizing cyproconazole by using 1- (4-chlorphenyl) -2- (1H-1,2, 4-triazole-1-yl) ethanone
CN115611822B (en) * 2022-10-12 2023-09-19 四川澄华生物科技有限公司 Preparation method of isavuconazole intermediate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042827A1 (en) * 2009-10-08 2011-04-14 CarboDesign LLC Process for the manufacture of enantiomerically pure antifungal azoles as ravuconazole and isavuconazole
CN104327047A (en) * 2014-10-17 2015-02-04 苏州明锐医药科技有限公司 Preparation method of efinaconazole
CN104844652A (en) * 2015-02-10 2015-08-19 扬子江药业集团南京海陵药业有限公司 Isavuconazole phosphate ester, preparation method therefor and application thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999045008A1 (en) * 1998-03-06 1999-09-10 F. Hoffmann-La Roche Ag 3-[4-(4-cyanophenyl)thiazol-2-y)]-1-(1h-1,2,4-triazol-1-yl)-butan-2-ol derivatives having antifungal activity
SI2882723T1 (en) * 2012-08-07 2017-04-26 Basilea Pharmaceutica Ag Process for the manufacture of isavuconazole or ravuconazole
WO2015150947A1 (en) * 2014-03-29 2015-10-08 Wockhardt Limited A process for the preparation of isavuconazole and its intermediates

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011042827A1 (en) * 2009-10-08 2011-04-14 CarboDesign LLC Process for the manufacture of enantiomerically pure antifungal azoles as ravuconazole and isavuconazole
CN104327047A (en) * 2014-10-17 2015-02-04 苏州明锐医药科技有限公司 Preparation method of efinaconazole
CN104844652A (en) * 2015-02-10 2015-08-19 扬子江药业集团南京海陵药业有限公司 Isavuconazole phosphate ester, preparation method therefor and application thereof

Also Published As

Publication number Publication date
CN105777740B (en) 2018-03-27
CN108452848A (en) 2018-08-28
CN105777740A (en) 2016-07-20

Similar Documents

Publication Publication Date Title
CN108452848B (en) Catalyst
CN105906545B (en) A kind of preparation method for synthesizing sitafloxacin intermediate (7S) -5- azaspiros [2.4] heptane -7- carbamates
CN108586356A (en) Rui Boxini new intermediates and its synthetic method for preparing Rui Boxini
CN108892670A (en) A kind of preparation method of high-purity ticagrelor
CN103601777A (en) Preparation method of capecitabine
CN104003947A (en) Sulfur/nitrogen-containing azole antifungal compound as well as preparation method and application of sulfur-containing azoles antifungal compound
CN106946764A (en) A kind of method for preparing the tartrate crystal formation B of piperazine Ma Selin half
CN104402895B (en) A kind of purification process of homoharringtonine
CN103951552B (en) Rosuvastatin intermediate and preparation method thereof
CN111004221A (en) A kind of pyrimidine/benzimidazole hybrid compound, preparation method and medical use
CN105085475B (en) A method of synthesis Egelieting intermediate
CN107739328B (en) Preparation method of key intermediate 1 for synthesizing barretinib
CN108948001A (en) The synthetic route of 1R, 3S-1- methyl tetrahydro-beta-carboline -3- carboxylic acid, anti-thrombus activity and application
CN107805225A (en) The preparation method of 5 mercapto tetrazole acetic acid and its sodium salt
CN108383831B (en) Preparation method of bepotastine important intermediate
CN104211644B (en) A kind of synthetic method of 3,4-dichloro-pyridazine
CN103601669B (en) A kind of synthetic method of 1-tertbutyloxycarbonyl-2-methyl-4-piperidones
CN110423218A (en) A kind of rich preparation method for impurity in Buddhist nun's synthesis of malic acid card
CN103183662A (en) Pyridine ring-containing triazole derivative and preparation method thereof
CN109438387A (en) A kind of preparation method of TAEM active ester
CN117069676B (en) A 6-methoxybenzothiazole compound and its preparation method and application
CN105481944B (en) A kind of two peptide copper complex of benzimidizole derivatives and its preparation method and application
CN113121505A (en) Triazolone compound with antifungal and antitumor dual effects and application thereof
CN102432532B (en) High-purity torasemide compound
CN102532037B (en) Novel pyrimidine derivatives as well as preparation method and applications thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20201117

Address after: Room 176, building 4, no.898 Pinghai Road, Situan Town, Fengxian District, Shanghai

Applicant after: Shanghai lanli Biotechnology Co., Ltd

Address before: 215123 377 Lin Quan street, Suzhou Industrial Park, Jiangsu

Applicant before: SUZHOU GENESPOTS BIOTECHNOLOGY Co.,Ltd.

GR01 Patent grant
GR01 Patent grant