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CN109988108B - Preparation method of cabozantinib - Google Patents

Preparation method of cabozantinib Download PDF

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CN109988108B
CN109988108B CN201711475428.1A CN201711475428A CN109988108B CN 109988108 B CN109988108 B CN 109988108B CN 201711475428 A CN201711475428 A CN 201711475428A CN 109988108 B CN109988108 B CN 109988108B
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cabozantinib
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CN109988108A (en
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葛广存
张长华
张景乐
刘普根
袁恒立
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Jiangsu Hansoh Pharmaceutical Group Co Ltd
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D215/00Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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    • C07D215/22Oxygen atoms attached in position 2 or 4

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Abstract

The invention belongs to the field of medicinal chemistry, and relates to a preparation method of cabozantinib. The method prepares the compound shown in the formula III by reacting 4-halogenated-6, 7-dimethoxyquinoline with 4-aminophenol, prepares the compound shown in the formula V by reacting cyclopropane-1, 1-dicarboxylic acid/ester with para-fluoroaniline, and then prepares the cabozantinib compound by condensation reaction. The preparation method provided by the invention has the advantages of simple operation, high yield, low cost, wide industrialization prospect and the like.

Description

Preparation method of cabozantinib
Technical Field
The invention belongs to the field of pharmaceutical chemistry and organic chemistry, and particularly relates to synthesis of cyclopropane-1, 1-dicarboxylic acid [4- (6, 7-dimethoxyquinolin-4-yloxy) -phenyl ] -amide (4-fluorophenyl) -amide (Cabozantinib) and an intermediate thereof.
Background
Cabozantinib (Cabozantinib), the chemical name is cyclopropane-1, 1-dicarboxylic acid [4- (6, 7-dimethoxy quinoline-4-yloxy) -phenyl ] -amide (4-fluorophenyl) -amide, and the structure is shown in formula I.
Figure BDA0001532724810000011
Cabozantinib is a multi-receptor tyrosine kinase inhibitor (tyrosine kinases inhibitor) developed by Exelixis corporation, targeting RET, MET, VEGFR-1, -2, -3, KIT, TRKB, FLT-3, AXL, TIE-2, etc. Tyrosine kinase plays an important role in the process of generating and developing tumors, and the research and development of drugs by taking tyrosine kinase as a target point become a hot spot of the research of antitumor drugs internationally. The tyrosinase inhibitor realizes the anti-tumor effect by inhibiting the damage repair of tumor cells, blocking cell division in a G1 stage, inducing and maintaining apoptosis, resisting neovascularization and other multiple ways; it has wide anticancer spectrum and has become the first-line medicine for treating various kinds of cancer.
By searching patent documents, the currently reported cabozantinib synthesis methods mainly comprise the following methods:
1) patent WO2005030140 is a compound patent of primary research company, in which the synthesis method of cabozantinib is reported as follows:
Figure BDA0001532724810000021
the method is to prepare cabozantinib by condensation after preparing 3 and 5 separately in two routes. One route is to prepare 3 by using cyclopropane-1, 1-dicarboxylic acid as a raw material through condensation and substitution. The other route is to prepare 5 by taking 1- (3, 4-dimethoxyphenyl) ethanone as a raw material and carrying out nitration, reduction, cyclization and substitution. The method has high energy consumption, uses genotoxic reagent, and has fussy operation and low yield.
2) Patent CN103459373A is a patent of preparation method of original research company, and the route is as follows:
Figure BDA0001532724810000022
the method is to prepare cabozantinib by condensation after preparing 3 and 6 separately in two routes. One route is to prepare 3 by using 4-hydroxy-6, 7-dimethoxyquinoline as a raw material through chlorination and substitution. The other route is to prepare 5 by condensing and chloridizing cyclopropane-1, 1-dicarboxylic acid as a raw material, and then condensing to prepare the cabozantinib. The method has the disadvantages of complicated operation of thionyl chloride post-treatment and low industrial production efficiency.
Disclosure of Invention
The invention aims to solve the problems and provides a novel preparation method of cabozantinib, which comprises the following synthesis steps:
condensing a compound of formula III with a compound of formula V to provide a compound of formula I cabozantinib:
Figure BDA0001532724810000023
wherein R is1Is C1~C10Alkyl of (2), preferably methyl, ethyl, propyl and isopropyl, R2Is C1~C10Preferably H, methyl, ethyl, propyl and isopropyl.
Preferably, the feeding molar ratio of the compound of formula III to the compound of formula V is 1:0.5 to 5, preferably 1:0.5 to 2, and more preferably 1:1.2 to 2.
Preferably, the reaction temperature is-20 to 80 ℃, preferably-10 to 30 ℃, and more preferably 20 to 30 ℃.
Preferably, the molar ratio of the used amount of the base to the fed compound of the formula III is 1-20: 1, preferably 5 to 10:1, more preferably 5 to 8: 1.
according to the method of the invention, the compound of formula IV and para-fluoroaniline are reacted under the action of alkali or a condensing agent to prepare the compound of formula V,
Figure BDA0001532724810000031
wherein the condensing agent can be selected from EDC & HCl or DCC; the base can be t-BuONa, t-BuOK, LHMDS, NaHMDS, KHMDS or Grignard reagent, preferably NaHMDS, KHMDS or Grignard reagent.
Preferably, the molar ratio of the compound of formula IV to the para-fluoroaniline feed is 1:0.5 to 5, preferably 1:0.5 to 2, and more preferably 1:1.2 to 2.
Preferably, the reaction temperature is-20 to 80 ℃, preferably-10 to 30 ℃, and more preferably 20 to 30 ℃.
Preferably, the molar ratio of the amount of the condensing agent to the compound of the formula IV is 1-10: 1, preferably 1.2 to 5: 1.
preferably, the molar ratio of the base to the compound of formula IV is 1-20: 1, preferably 5-20: 1, more preferably 5-10: 1.
According to the method of the invention, the compound of formula II reacts with 4-aminophenol under the action of alkali to prepare the compound of formula III,
Figure BDA0001532724810000032
wherein X is selected from F, Cl, Br or I.
Preferably, the base is selected from sodium tert-butoxide or potassium tert-butoxide. .
Preferably, the reaction temperature is 90-120 ℃.
Preferably, the feeding molar ratio of the alkali to the compound of the formula II is 1-8: 1.
The novel preparation method of cabozantinib and the intermediate thereof provided by the invention has the advantages of simple preparation method, low reaction cost, convenience in operation, avoidance of toxic reagents, high yield of the prepared product, good purity and suitability for industrial production.
Detailed Description
The following specific examples are presented to enable those skilled in the art to more clearly understand and practice the present invention. They should not be considered as limiting the scope of the invention but merely as being exemplary illustrations and representative of the invention. The solvents, reagents, raw materials and the like used in the present invention are commercially available products.
EXAMPLE 14 preparation of- ((6, 7-dimethoxy-4-yl) oxy) aniline
Figure BDA0001532724810000041
Adding 4-chloro-6, 7-dimethoxyquinoline (10g,0.045mol,1.0eq.) and 4-aminophenol (6.9g,0.063mol,1.4eq.) into 50mL of N, N-dimethylacetamide, cooling to 0 ℃, slowly adding sodium tert-butoxide (6.1g,0.063mol,1.4eq.) and a suspension of 50mL of N, N-dimethylacetamide, after the addition, heating to 100 ℃, reacting for 5 hours, cooling the reaction liquid to 0 ℃, adding 400mL of purified water, and stirring for crystallization for 15-16 hours. Stirring is stopped, filtration is carried out, and 20mL of purified water is used for washing a filter cake to obtain 11.2g of 4- ((6, 7-dimethoxy-4-yl) oxy) aniline with the yield of 84.5% and the purity of 99.1%.
MS(ESI):m/z 297.20[M+H]+.
1H NMR(DMSO-d6,400MHz):δ3.94(s,6H),5.19(s,2H),6.38(d,J=2.8Hz,1H),6.68(d,J=8.4Hz,2H),6.93(d,J=8.8Hz,2H),7.37(s,1H),7.51(s,1H),8.43(d,J=5.2Hz,1H).
EXAMPLE 24 preparation of- ((6, 7-dimethoxy-4-yl) oxy) aniline
Figure BDA0001532724810000042
Adding 4-chloro-6, 7-dimethoxyquinoline (10g,0.045mol,1.0eq.) and 4-aminophenol (6.9g,0.063mol,1.4eq.) into 50mL of N, N-dimethylacetamide, cooling to 0 ℃, slowly adding sodium tert-butoxide (6.1g,0.063mol,1.4eq.) and a suspension of 50mL of N, N-dimethylacetamide, after the addition, heating to 110 ℃, reacting for 4 hours, cooling the reaction liquid to 0 ℃, adding 400mL of purified water, and stirring for crystallization for 15-16 hours. Stirring is stopped, filtering is carried out, and 20mL of purified water of a filter cake is washed to obtain 11.8g of 4- ((6, 7-dimethoxy-4-yl) oxy) aniline with the yield of 89.1% and the purity of 99.1%.
The mass and hydrogen spectra data are essentially identical to those of example 1.
EXAMPLE 34 preparation of- ((6, 7-dimethoxy-4-yl) oxy) aniline
Figure BDA0001532724810000043
Adding 4-chloro-6, 7-dimethoxyquinoline (10g,0.045mol,1.0eq.) and 4-aminophenol (6.9g,0.063mol,1.4eq.) into 50mL of N, N-dimethylacetamide, cooling to 0 ℃, slowly adding a suspension of potassium tert-butoxide (7.1g,0.063mol,1.4eq.) and 50mL of N, N-dimethylacetamide, after the addition, heating to 100 ℃, reacting for 5 hours, cooling the reaction liquid to 0 ℃, adding 400mL of purified water, and stirring for crystallization for 15-16 hours. Stirring is stopped, filtering is carried out, and 20mL of purified water of a filter cake is washed to obtain 11.1g of 4- ((6, 7-dimethoxy-4-yl) oxy) aniline with the yield of 83.8 percent and the purity of 99.2 percent.
The mass and hydrogen spectra data are essentially identical to those of example 1.
EXAMPLE 41 preparation of methyl- ((4-fluorophenyl) carbamoyl) cyclopropanecarboxylate
Figure BDA0001532724810000051
Monomethyl 1, 1-cyclopropyldicarboxylate (10g,0.069mol,1.0eq.) and para-fluoroaniline (11.6g,
0.104mol,1.5eq.) was added to 150mL of dichloromethane, and 1-ethyl- (3-dimethylaminopropyl) carbonyldiimine hydrochloride (20g,0.104mol,1.5eq.) was added with stirring and reacted at room temperature for 2 h. Concentrating to remove dichloromethane, adding 30mL of methanol into the concentrated solution, stirring to dissolve, adding 150mL of purified water, stirring to crystallize, filtering, purifying the filter cake with 20mL of water, and washing to obtain 14.5g of methyl 1- ((4-fluorophenyl) carbamoyl) cyclopropanecarboxylate, wherein the yield is 96.7% and the purity is 99.8%.
MS(ESI):m/z 238.27[M+H]+,260.17[M+Na]+.
1H NMR(DMSO-d6,400MHz):δ1.37~1.44(m,4H),3.68(s,3H),7.12~7.18(m,2H),7.61~7.66(m,2H),10.35(s,1H).
EXAMPLE 51 preparation of methyl- ((4-fluorophenyl) carbamoyl) cyclopropanecarboxylate
Figure BDA0001532724810000052
Dimethyl 1, 1-cyclopropyldicarboxylate (10.9g,0.069mol,1.0eq.) and para-fluoroaniline (11.6g,0.104mol,1.5eq.) were added to 100mL of tetrahydrofuran, the temperature was reduced to 0 ℃ and 2M sodium bis (trimethylsilyl) amide (NaHMDS)/tetrahydrofuran (207mL,0.414mol,6.0eq.) was added with stirring and reacted at room temperature for 2 hours. And after the reaction is finished, adding 1.8L of purified water, stirring and crystallizing for 5-6 h, filtering, and washing 20mL of filter cake purified water to obtain 13.7g of methyl 1- ((4-fluorophenyl) carbamoyl) cyclopropanecarboxylate, wherein the yield is 91.3% and the purity is 99.7%.
The mass and hydrogen spectra data are essentially identical to those of example 4.
Example 6 preparation of Cabozantinib Compounds
Figure BDA0001532724810000053
Adding 4- ((6, 7-dimethoxy-4-yl) oxy) aniline (10g,0.034mol,1.0eq.) and methyl 1- ((4-fluorophenyl) carbamoyl) cyclopropanecarboxylate (11.3g,0.048mol,1.4eq.) into 100mL of tetrahydrofuran, cooling to 0 ℃, slowly adding 2M NaHMDS tetrahydrofuran solution (102mL,0.204mol,6.0eq.), reacting at room temperature for 4h, cooling the reaction liquid to 0 ℃, slowly adding purified water 1200mL, stirring and crystallizing for 5-6 h, filtering, and washing with 20mL of purified water to obtain the cabozantinib solid 16g, wherein the yield is 94.6% and the purity is 99.6%.
MS(ESI):m/z 502.48[M+H]+,524.37[M+Na]+.
1H NMR(DMSO-d6,400MHz):δ1.49(s,4H),3.94(s,3H),3.95(s,3H),6.43(d,J=5.2Hz,1H),7.13~7.19(m,2H),7.24(d,J=9.2Hz,2H),7.40(s,1H),7.51(s,1H),7.64~7.67(m,2H),7.78(d,J=8.8Hz,2H),8.47(d,J=5.2Hz,1H),10.08(s,1H),10.20(s,1H).
Example 7 preparation of Cabozantinib Compounds
Figure BDA0001532724810000061
Adding 4- ((6, 7-dimethoxy-4-yl) oxy) aniline (10g,0.034mol,1.0eq.) and methyl 1- ((4-fluorophenyl) carbamoyl) cyclopropanecarboxylate (11.3g,0.048mol,1.4eq.) into 100mL of tetrahydrofuran, cooling to 0 ℃, slowly adding a 2M KHMDS tetrahydrofuran solution (102mL,0.204mol,6.0eq.), reacting at room temperature for 4h, cooling the reaction liquid to 0 ℃, slowly adding purified water 1200mL, stirring and crystallizing for 5-6 h, filtering, and washing with 20mL of purified water to obtain 15.7g of cabozantin solid, wherein the yield is 92.8% and the purity is 99.7%.
The mass and hydrogen spectra data are essentially identical to those of example 6.
EXAMPLE 8 preparation of Cabozantinib Compounds
Figure BDA0001532724810000062
Adding 4- ((6, 7-dimethoxy-4-yl) oxy) aniline (10g,0.034mol,1.0eq.) and methyl 1- ((4-fluorophenyl) carbamoyl) cyclopropanecarboxylate (11.3g,0.048mol,1.4eq.) into tetrahydrofuran 100mL, cooling to 0 ℃, slowly adding 2M isopropyl magnesium chloride tetrahydrofuran solution (102mL,0.204mol,6.0eq.), reacting at room temperature for 4h, cooling the reaction liquid to 0 ℃, slowly adding purified water 1200mL, stirring and crystallizing for 5-6 h, filtering, and washing with 20mL of purified water to obtain cabozantinib solid 15.5g, yield 91.6%, and purity 99.6%.
The mass and hydrogen spectra data are essentially identical to those of example 6.
Example 9 preparation of Cabozantinib Compounds
Figure BDA0001532724810000071
Adding 4- ((6, 7-dimethoxy-4-yl) oxy) aniline (10g,0.034mol,1.0eq.) and methyl 1- ((4-fluorophenyl) carbamoyl) cyclopropanecarboxylate (11.3g,0.048mol,1.4eq.) into 100mL of tetrahydrofuran, slowly adding 2M LHMDS tetrahydrofuran solution (102mL,0.204mol,6.0eq.) at normal temperature, reacting at room temperature for 4h, slowly adding 1200mL of purified water into the reaction solution, stirring and crystallizing for 5-6 h, filtering, and washing with 20mL of purified water to obtain 15g of Carbotinib solid with yield of 88.9% and purity of 99.8%.
The mass and hydrogen spectra data are essentially identical to those of example 6.

Claims (21)

1. A process for preparing a cabozantinib compound comprising: condensing the compound of the formula III with the compound of the formula V under alkaline condition to obtain the compound of the formula I, namely cabozantinib,
Figure FDA0003473238460000011
wherein R is1Is selected from C1~C10The base is selected from LHMDS, NaHMDS, KHMDS or grignard reagents.
2. The method of claim 1, wherein R is1Selected from methyl, ethyl, propyl and isopropyl.
3. The method of claim 1, wherein the molar ratio of compound of formula III to compound of formula V is 1:0.5 to 5.
4. The method for preparing cabozantinib compound according to claim 1, wherein the molar ratio of the compound of formula III to the compound of formula V is 1: 0.5-2.
5. The method for preparing cabozantinib compound according to claim 1, wherein the molar ratio of the compound of formula III to the compound of formula V is 1: 1.2-2.
6. The method for preparing cabozantinib compound according to claim 1, wherein the molar ratio of the used amount of the base to the fed amount of the compound of formula III is 1-20: 1.
7. the method for preparing cabozantinib compound according to claim 1, wherein the molar ratio of the used amount of the base to the fed amount of the compound of formula III is 5-10: 1.
8. the method for preparing cabozantinib compound according to claim 1, wherein the molar ratio of the used amount of the base to the fed amount of the compound of formula III is 5-8: 1.
9. the preparation method of cabozantinib compound according to claim 1, characterized in that compound of formula IV and para-fluoroaniline are reacted in the presence of base or condensing agent to prepare compound of formula V,
Figure FDA0003473238460000012
wherein R is2Is selected from C1~C10Alkyl or H.
10. The method of claim 9, wherein R is2Selected from the group consisting of H, methyl, ethyl, propyl, and isopropyl.
11. The process for preparing cabozantinib compound according to claim 9, wherein the condensing agent is selected from EDC-HCl or DCC; the base can be selected from LHMDS, NaHMDS, KHMDS or Grignard reagent.
12. The method for preparing cabozantinib compound according to claim 9, wherein the reaction temperature is-20 ℃ to 80 ℃.
13. The method for preparing cabozantinib compound according to claim 9, wherein the reaction temperature is-10 ℃ to 30 ℃.
14. The method for preparing cabozantinib compound according to claim 9, wherein the reaction temperature is 20 ℃ to 30 ℃.
15. The method of claim 9, wherein the molar ratio of the amount of the condensing agent to the compound of formula IV is 1 to 10: 1.
16. the method of claim 9, wherein the molar ratio of the amount of the condensing agent to the compound of formula IV is 1.2 to 5: 1.
17. the method for preparing cabozantinib compound according to claim 9, wherein the molar ratio of the amount of base to the compound of formula IV is 1-20: 1.
18. The method for preparing cabozantinib compound according to claim 9, wherein the molar ratio of the amount of base to the compound of formula IV is 5-10: 1.
19. The method of claim 1, wherein the compound of formula II is reacted with 4-aminophenol under the action of a base to produce the compound of formula III,
Figure FDA0003473238460000021
wherein X is selected from F, Cl, Br or I.
20. The method of claim 19, wherein the base is selected from sodium tert-butoxide and potassium tert-butoxide.
21. The method of claim 19, wherein the reaction temperature is 90 ℃ to 120 ℃.
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CN112390749B (en) * 2019-08-19 2024-12-03 鲁南制药集团股份有限公司 A method for synthesizing cabozantinib and its intermediates
CN110903240A (en) * 2019-12-12 2020-03-24 上海玉函化工有限公司 Preparation method of broad-spectrum anticancer drug cabozantinib
CN111217745B (en) * 2020-02-25 2021-05-11 漯河医学高等专科学校 Preparation method of cabozantinib

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CN103068384A (en) * 2010-04-29 2013-04-24 德西费拉制药有限责任公司 Cyclopropyl dicarboxamides and analogs exhibiting anti-cancer and anti-proliferative activites
WO2014000713A1 (en) * 2012-06-29 2014-01-03 Zhejiang Beta Pharma Incorporation NOVEL FUSED PYRIDINE DERIVATIVES USEFUL AS c-MET TYROSINE KINASE INHIBITORS
WO2017029362A1 (en) * 2015-08-19 2017-02-23 Sandoz Ag Asymmetric bisamidation of malonic ester derivatives

Patent Citations (3)

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CN103068384A (en) * 2010-04-29 2013-04-24 德西费拉制药有限责任公司 Cyclopropyl dicarboxamides and analogs exhibiting anti-cancer and anti-proliferative activites
WO2014000713A1 (en) * 2012-06-29 2014-01-03 Zhejiang Beta Pharma Incorporation NOVEL FUSED PYRIDINE DERIVATIVES USEFUL AS c-MET TYROSINE KINASE INHIBITORS
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