CN102146073A - New preparation method of alpha crystal form of imatinib mesylate - Google Patents

New preparation method of alpha crystal form of imatinib mesylate Download PDF

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CN102146073A
CN102146073A CN2011100441918A CN201110044191A CN102146073A CN 102146073 A CN102146073 A CN 102146073A CN 2011100441918 A CN2011100441918 A CN 2011100441918A CN 201110044191 A CN201110044191 A CN 201110044191A CN 102146073 A CN102146073 A CN 102146073A
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mixed solvent
ketone
ethanol
agate
solvent
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赵聪
黄常康
杨少宁
陈云
丁磊
陈国华
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Jiangsu Simcere Pharmaceutical R&D Co Ltd
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Jiangsu Simcere Pharmaceutical R&D Co Ltd
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Abstract

The invention provides a new preparation method of an alpha crystal form of imatinib mesylate. The method comprises the following steps: suspending imatinib in the mixed solvent of organic solvent and water, and then adding methylsulphonic acid to obtain the alpha crystal form of imatinib mesylate.

Description

A kind of her agate replaces the new preparation method of Buddhist nun's methane sulfonates alpha-crystal form
Technical field
The present invention's design relates to the polymorph medicine preparing technical field, more specifically for relating to the preparation method that a kind of her agate replaces Buddhist nun's methane sulfonates alpha-crystal form
Background of invention
Yi Ma is 4-[(4-methyl isophthalic acid-piperazinyl again for Buddhist nun's methane sulfonates) methyl]-N-[4-methyl-3-[4-(3-pyridyl)-2-pyrimidyl] amino]-phenyl] the benzamide methane sulfonates, its structural formula is suc as formula shown in the I:
Figure BDA0000047707870000011
Formula I
Yi Ma is a kind of protein-tyrosine kinase inhibitor of being developed by Switzerland Novartis Co.,Ltd for Buddhist nun's methane sulfonates, it is effective especially in all types of treatment for cancer, is widely used in the chronic phase patient after treatment chronic myelocytic leukemia (CML) acute transformation phase, acceleration period or alpha-interferon treatment are failed at present; Can not excision or malignant gastrointestinal mesenchymal neoplasm (GIST) patient that shifts is taken place, with oral form administration, the market requirement is bigger usually.
Up to the present, according to bibliographical information, Yi Ma is for Buddhist nun's methane sulfonates total α, β, δ, ε, α 2, H1, I, II, F, G, K, H, I, K, IV, V, VI, VII, VIII, IX, X, XI, XIII, XIV, XV, XVI, amorphous, totally 27 kinds of crystal formations.Wherein beta crystal is that the listing crystal formation is subjected to Novartis Co.,Ltd's patent protection, and all the other crystal formation patents are new or be solvate, and alpha-crystal form has not had patent protection at present, and had similar physico-chemical property with beta crystal, so be studied more as one of crystal formation of discovery early.In W09903854, her agate is suspended in the ethanol for the Buddhist nun, drips methanesulfonic, the high temperature reflux cooling crystallization makes, but this method yield is low, and dissolvent residual exceeds national standard; CN101573350A mentions multiple her special agate and replaces Buddhist nun's methane sulfonates preparation method, and product is separated out soon in these method salification process, can't filter purification, and controllability is bad, concurrent existing mixed crystal phenomenon.WO2005095379 replaces the Buddhist nun to be suspended in the mixed solvent of ethanol and C1~C6 alcoholic solvent her agate, and high temperature drips methanesulfonic, drips ester badness solvent then, cooling crystallization, this method solvent load is excessive, and the salification process product is separated out soon, can't filter purification.Patent WO2006024863 is suspended in the single alcohol kind solvent of C3~C5 with her agate for the Buddhist nun, drips methanesulfonic, the high temperature reflux cooling crystallization, and this method also is to have the problem that dissolvent residual can't be qualified.WO2006048890 is that her agate that will prepare replaces Buddhist nun's methane sulfonates to be dissolved in the mixed solvent of C1~C4 alcohol and water, and by Rotary Evaporators concentrating under reduced pressure evaporate to dryness, this method has mixed crystal phenomenon, and is not easy to industrialization.More than the methods introduced of five pieces of patent applications, mainly have mixed crystal phenomenon, problem such as repeatability is bad, and dissolvent residual is defective, and reaction volume is excessive, and reaction process is uncontrollable is so cause it to be subjected to certain limitation in course of industrialization.
Summary of the invention
The present invention improves on the basis of WO2005095379 and WO2006048890, by replacing her agate the optimum solvent and the poor solvent of Buddhist nun's methane sulfonates to be mixed with mixed solvent with certain proportion, reaction cumulative volume and the solubleness of product in mother liquor have effectively been regulated by the water that adds certain ratio again, add methanesulfonic one step salify then, add a small amount of α crystal seed again and induce crystallization to make her agate for Buddhist nun's methane sulfonates alpha-crystal form.This method has well solved the problem that alcoholic solvent exceeds standard, and whole salification process controllability, favorable reproducibility, and strong operability has good industrial application value.
The reaction that the present invention relates to is suc as formula shown in the II:
Formula II
Her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, adds methanesulfonic then, obtain the alpha-crystal form that above-mentioned her agate replaces Buddhist nun's methane sulfonates.
Further, the concrete scheme of taking is as follows:
Her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, make temperature maintenance at 20 ℃~80 ℃, add methanesulfonic or methanesulfonic solution then, continue to keep 20 ℃~80 ℃ reactions, add her agate of alpha-crystal form and make to cause crystal seed for Buddhist nun's methane sulfonates, the cooling crystallization.The volume ratio of water is 1%~10% in the mixed solvent of described organic solvent and water, and it is one of following that organic solvent is selected from: a) two or more Fatty Alcohol(C12-C14 and C12-C18) mixed solvent; B) mixed solvent of methyl alcohol or ethanol and ester, described ester can be single ester solvent, also can be the blending ratio mixed solvent of two or more ester arbitrarily; C) mixed solvent of methyl alcohol or ethanol and ketone, described ketone can be single ketone solvent, also can be the blending ratio mixed solvent of two or more ketone arbitrarily.
Preferably her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, make temperature maintenance at 30 ℃~80 ℃, add methanesulfonic or methanesulfonic solution then, continue to keep 30 ℃~80 ℃ reactions, add her agate of 0.1%~2% alpha-crystal form and do to cause crystal seed, be cooled to-10 ℃~20 ℃ insulated and stirred crystallizatioies, filter for Buddhist nun's methane sulfonates, drying obtains her agate and replaces Buddhist nun's methane sulfonates alpha-crystal form.Described drying is dry or 20 ℃~60 ℃ vacuum-dryings of common heating.The volume ratio of water is 1%~10% in the mixed solvent of described organic solvent and water, and it is one of following that organic solvent is selected from: a) two or three or four kind C 1-6The Fatty Alcohol(C12-C14 and C12-C18) mixed solvent; B) mixed solvent of methyl alcohol or ethanol and ester, described ester are R 1C (O) OR 2, R wherein 1Be C 1-4Alkyl, R 2Be C 1-4Alkyl, described ester can be single ester solvent, also can be the blending ratio mixed solvent of two or three ester arbitrarily; C) mixed solvent of methyl alcohol or ethanol and ketone, described ketone are R 3C (O) R 4, R wherein 3Be C 1-4Alkyl, R 4Be C 1-4Alkyl, described ketone can be single ketone solvent, also can be the blending ratio mixed solvent of two or three ketone arbitrarily.
More preferably her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, make temperature maintenance at 40 ℃~80 ℃, add methanesulfonic or methanesulfonic solution then, continue to keep 40 ℃~80 ℃ reaction 0.1h~2h, add her agate of 0.1%~2% alpha-crystal form and do to cause crystal seed, slowly be cooled to-10 ℃~20 ℃ for Buddhist nun's methane sulfonates, then with rotating speed insulated and stirred 1h~24h crystallization of 0rpm~300rpm, filter, drying obtains her agate and replaces Buddhist nun's methane sulfonates alpha-crystal form.Described drying is 30 ℃~50 ℃ vacuum-dryings.The volume ratio of water is 1%~10% in the mixed solvent of described organic solvent and water, and it is one of following that organic solvent is selected from: a) two kinds of C 1-6The Fatty Alcohol(C12-C14 and C12-C18) mixed solvent; B) mixed solvent of methyl alcohol or ethanol and ester, the volume ratio of methyl alcohol or ethanol and ester are 1: 0.5~1: 2, and described ester is R 1C (O) OR 2, R wherein 1Be C 1-4Alkyl, R 2Be C 1-4Alkyl, described ester are single ester solvent; C) mixed solvent of methyl alcohol or ethanol and ketone, the volume ratio of methyl alcohol or ethanol and ketone are 1: 0.5~1: 2, and described ketone is R 3C (O) R 4, R wherein 3Be C 1-4Alkyl, R 4Be C 1-4Alkyl, described ketone are single ketone solvent.
Further preferably her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, make temperature maintenance at 50 ℃~80 ℃, add methanesulfonic or methanesulfonic solution then, continue to keep 50 ℃~80 ℃ reaction 0.1h~2h, add her agate of 0.1%~2% alpha-crystal form and do to cause crystal seed, slowly be cooled to-10 ℃~20 ℃ for Buddhist nun's methane sulfonates, then with rotating speed insulated and stirred 4h~16h crystallization of 0rpm~300rpm, filter, drying obtains her agate and replaces Buddhist nun's methane sulfonates alpha-crystal form.Described drying is 40 ℃~50 ℃ vacuum-dryings.The volume ratio of water is 1%~10% in the mixed solvent of described organic solvent and water, and it is one of following that organic solvent is selected from: a) two kinds in methyl alcohol, ethanol, n-propyl alcohol, Virahol, propyl carbinol, sec-butyl alcohol, isopropylcarbinol, the Pentyl alcohol; B) mixed solvent of methyl alcohol or ethanol and ester, wherein the volume ratio of methyl alcohol or ethanol and ester is 1: 0.5~1: 1.5, and described ester is selected from a kind of in ethyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butylacetate, the isobutyl acetate; C) mixed solvent of methyl alcohol or ethanol and ketone, the volume ratio of methyl alcohol or ethanol and ketone are 1: 0.5~1: 1.5, and described ketone is selected from a kind of in acetone, butanone, methyl isopropyl Ketone, methyl butyl ketone, the methyl iso-butyl ketone (MIBK).
Yi Ma is 1: 4~1: 50 for the mass ratio of the mixed solvent of Buddhist nun and organic solvent and water, is preferably 1: 4~1: 40; More preferably 1: 4~1: 35, more preferably 1: 6~1: 30.
Yi Ma is 1: 0.9~1: 1 for the molar ratio example of Buddhist nun and methanesulfonic, is preferably 1: 0.95~1: 1.05, more preferably is 1: 0.98~1: 1.02.
C described in the application 1-6Fatty Alcohol(C12-C14 and C12-C18) includes but not limited to: methyl alcohol, ethanol, n-propyl alcohol, Virahol, propyl carbinol, sec-butyl alcohol, isopropylcarbinol, the trimethyl carbinol, 1-amylalcohol, 2-amylalcohol, 3-amylalcohol, 2-methyl-1-butene alcohol, 2-methyl-2-butanols, 3-methyl-2-butanols, 3-methyl isophthalic acid-butanols, 2,2-dimethyl-1-propyl alcohol, 1-hexanol, 2-hexanol, 3-hexanol.
Formula described in the application is R 1C (O) OR 2Ester (R 1Be C 1-4Alkyl or cycloalkyl, R 2Be C 1-4Alkyl or cycloalkyl); Include but not limited to methyl-formiate, ethyl formate, propyl formate, isopropyl formate, butyl formate, sec.-butyl formate, tetryl formate, t-butyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butylacetate, sec-butyl acetate, isobutyl acetate, tert.-butyl acetate, methyl propionate, ethyl propionate, propyl propionate, isopropyl propionate, butyl propionate, sec-butyl propionate, isobutyl propionate, the propionic acid tert-butyl ester, methyl-butyrate, ethyl butyrate, propyl butyrate, isopropyl butyrate, butyl butyrate, the secondary butyl ester of butyric acid, isobutyl butyrate, tert-butyl acetate, methyl isobutyrate, ethyl isobutyrate, propyl isobutyrate, isopropyl isobutyrate, butyl isobutyrate, the secondary butyl ester of isopropylformic acid, isobutyl isobutyrate, tert-butyl isobutyrate.
Formula described in the application is R 3C (O) R 4Ketone (R 3Be C 1-4Alkyl or C 1-4Cycloalkyl, R 4Be C 1-4Alkyl or C 1-4Cycloalkyl); Include but not limited to acetone, butanone, methyl isopropyl Ketone, methyl butyl ketone, methyl iso-butyl ketone (MIBK), 1,1,1-trimethylammonium acetone, metacetone, 3-hexanone, 2-methyl-propione, 3-heptanone.
Problems such as there was mixed crystal phenomenon in patent before the present invention had overcome when her agate of preparation replaces Buddhist nun's methane sulfonates alpha-crystal form, and repeatability is bad, and dissolvent residual is defective, and reaction volume is excessive, and reaction process is uncontrollable, thus the feasibility of operating increased; This invention yield height in addition, technology is simple, is fit to very much suitability for industrialized production, therefore has good economic worth.
Description of drawings
Fig. 1 produces the XRPD collection of illustrative plates that her agate replaces Buddhist nun's methane sulfonates alpha-crystal form for embodiment 1.
Fig. 2 produces the XRPD collection of illustrative plates that her agate replaces Buddhist nun's methane sulfonates alpha-crystal form for embodiment 2.
Fig. 3 produces the XRPD collection of illustrative plates that her agate replaces Buddhist nun's methane sulfonates alpha-crystal form for embodiment 3.
Fig. 4 produces the XRPD collection of illustrative plates that her agate replaces Buddhist nun's methane sulfonates alpha-crystal form for embodiment 4.
Specific implementation method
To help to understand the present invention by following examples of implementation, but not limit content of the present invention
Embodiment 1: her agate replaces the preparation of Buddhist nun's methane sulfonates alpha-crystal form
Take by weighing her agate and replace Buddhist nun 10g (2.02mmol, 1.0eq), be suspended in the mixed solvent of 100mL methanol/isopropanol/water (V%:49: 49: 2), be warming up to 70 ℃, speed with 1mL/min drips 1.3mL (2.0mmol, 0.99eq) methanesulfonic solution, dropwise reaction solution and be the clarification shape, keep 70 ℃ and continue stirring reaction 0.5h, the reaction filtered while hot, filtrate is warming up to 70 ℃ again, add her agate of 0.1g (1%) and make to cause crystal seed for Buddhist nun's methane sulfonates alpha-crystal form, slowly be cooled to 10 ℃,, filter with 50rpm rotating speed insulated and stirred 8h, filter cake 50mL ethyl acetate rinse, 45 ℃ of vacuum-dryings obtain her agate and replace Buddhist nun's methane sulfonates alpha-crystal form 10.5g, yield 88%.
Embodiment 2: her agate replaces the preparation of Buddhist nun's methane sulfonates alpha-crystal form
Take by weighing her agate and replace Buddhist nun 10g (2.02mmol, 1.0eq), be suspended in the mixed solvent of 200mL ethanol/isopropanol (V%:48: 48: 4), be warming up to 70 ℃, speed with 1mL/min drips 1.3mL (2.0mmol, 0.99eq) methanesulfonic solution, dropwise the reaction solution system and be the clarification shape, keep 70 ℃ and continue stirring reaction 0.5h, the reaction filtered while hot, filtrate is warming up to 70 ℃ again, add her agate of 0.1g (1%) and make to cause crystal seed for Buddhist nun's methane sulfonates alpha-crystal form, slowly be cooled to 10 ℃,, filter with 50rpm rotating speed insulated and stirred 8h, filter cake 50mL ethyl acetate rinse, 45 ℃ of vacuum-dryings obtain her agate and replace Buddhist nun's methane sulfonates alpha-crystal form 10.8g, yield 90%.
Embodiment 3: her agate replaces the preparation of Buddhist nun's methane sulfonates alpha-crystal form
Take by weighing her agate and replace Buddhist nun 10g (2.02mmol, 1.0eq), be suspended in the mixed solvent of 250mL ethanol/ethyl acetate/water (V%:49: 49: 2), be warming up to 70 ℃, speed with 1mL/min drips 1.3mL (2.0mmol, 0.99eq) methanesulfonic solution, dropwise the reaction solution system and be the clarification shape, keep 70 ℃ and continue stirring reaction 0.5h, the reaction filtered while hot, filtrate is warming up to 70 ℃ again, add her agate of 0.1g (1%) and make to cause crystal seed for Buddhist nun's methane sulfonates alpha-crystal form, slowly be cooled to 0 ℃,, filter with 50rpm rotating speed insulated and stirred 12h, filter cake 50mL ethyl acetate rinse, 45 ℃ of vacuum-dryings obtain her agate and replace Buddhist nun's methane sulfonates alpha-crystal form 11.5g, yield 96%.
Embodiment 4: her agate replaces the preparation of Buddhist nun's methane sulfonates alpha-crystal form
Take by weighing her agate and replace Buddhist nun 10g (2.02mmol, 1.0eq), be suspended in the mixed solvent of 250mL ethanol/methyl iso-butyl ketone (MIBK)/water (V%:47: 47: 6), be warming up to 70 ℃, speed with 1mL/min drips 1.3mL (2.0mmol, 0.99eq) methanesulfonic solution, dropwise the reaction solution system and be the clarification shape, keep 70 ℃ and continue stirring reaction 0.5h, the reaction filtered while hot, filtrate is warming up to 70 ℃ again, add her agate of 0.1g (1%) and make to cause crystal seed for Buddhist nun's methane sulfonates alpha-crystal form, slowly be cooled to 0 ℃,, filter with 50rpm rotating speed insulated and stirred 12h, filter cake 50mL ethyl acetate rinse, 45 ℃ of vacuum-dryings obtain her agate and replace Buddhist nun's methane sulfonates alpha-crystal form 11.3g, yield 95%.

Claims (10)

1. her agate replaces the new preparation method of Buddhist nun's methane sulfonates alpha-crystal form, it is characterized in that: her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, add methanesulfonic or methanesulfonic solution then, obtain the alpha-crystal form that her agate replaces Buddhist nun's methane sulfonates.
2. preparation method according to claim 1, its feature may further comprise the steps: her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, make temperature maintenance at 20 ℃~80 ℃, add methanesulfonic or methanesulfonic solution then, continue to keep 20 ℃~80 ℃ reactions, add her agate of alpha-crystal form and make to cause crystal seed for Buddhist nun's methane sulfonates, the cooling crystallization.
3. preparation method according to claim 1, its feature may further comprise the steps: her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, make temperature maintenance at 30 ℃~80 ℃, add methanesulfonic or methanesulfonic solution then, continue to keep 30 ℃~80 ℃ reaction 0.1h~2h, add her agate of 0.1%~2% alpha-crystal form and make to cause crystal seed for Buddhist nun's methane sulfonates, be cooled to-10 ℃~20 ℃ insulated and stirred 1h~24h crystallizatioies, filter, drying obtains her agate and replaces Buddhist nun's methane sulfonates alpha-crystal form; Described drying is dry or 20 ℃~60 ℃ vacuum-dryings of common heating; Wherein her agate is 1:0.9~1:1.1 for the molar ratio example of Buddhist nun and methanesulfonic.
4. preparation method according to claim 1, its feature may further comprise the steps: her agate is suspended in the mixed solvent of organic solvent and water for the Buddhist nun, make temperature maintenance at 40 ℃~80 ℃, add methanesulfonic or methanesulfonic solution then, continue to keep 40 ℃~80 ℃ reaction 0.1h~2h, add her agate of 0.1%~2% alpha-crystal form and make to cause crystal seed for Buddhist nun's methane sulfonates, slowly be cooled to-10 ℃~20 ℃, then with rotating speed insulated and stirred 4h~16h crystallization of 0rpm~300rpm, filter, drying obtains her agate and replaces Buddhist nun's methane sulfonates alpha-crystal form; Described drying is dry or 20 ℃~60 ℃ vacuum-dryings of common heating; Wherein her agate is 1:0.95~1:1.05 for the molar ratio example of Buddhist nun and methanesulfonic.
5. preparation method according to claim 4 is characterized in that described drying is 30 ℃~50 ℃ vacuum-dryings.
6. according to each described preparation method in the claim 1 ~ 5, it is characterized in that the volume ratio of water in the mixed solvent of described organic solvent and water is 1% ~ 10%, it is one of following that organic solvent is selected from:
A) two or more Fatty Alcohol(C12-C14 and C12-C18) mixed solvent;
B) mixed solvent of methyl alcohol or ethanol and ester, described ester can be single ester solvent, also can be the blending ratio mixed solvent of two or more ester arbitrarily;
C) mixed solvent of methyl alcohol or ethanol and ketone, described ketone can be single ketone solvent, also can be the blending ratio mixed solvent of two or more ketone arbitrarily.
7. according to each described preparation method in the claim 1 ~ 5, it is characterized in that the volume ratio of water in the mixed solvent of her described organic solvent and water is 1% ~ 10%, it is one of following that organic solvent is selected from:
A) two or three or four kind C 1-6The Fatty Alcohol(C12-C14 and C12-C18) mixed solvent;
B) mixed solvent of methyl alcohol or ethanol and ester, described ester are R 1C (O) OR 2, R wherein 1Be C 1-4Alkyl or C 1-4Cycloalkyl, R 2Be C 1-4Alkyl or C 1-4Cycloalkyl can be single ester solvent, also can be the blending ratio mixed solvent of two or three ester arbitrarily;
C) mixed solvent of methyl alcohol or ethanol and ketone, described ketone are R 3C (O) R 4, R wherein 3Be C 1-4Alkyl or C 1-4Cycloalkyl, R 4Be C 1-4Alkyl or C 1-4Cycloalkyl can be single ketone solvent, also can be the blending ratio mixed solvent of two or three ketone arbitrarily.
8. according to each described preparation method in the claim 1 ~ 5, it is characterized in that the volume ratio of water in the mixed solvent of described organic solvent and water is 1% ~ 10%, it is one of following that organic solvent is selected from:
A) two kinds of C 1-6The Fatty Alcohol(C12-C14 and C12-C18) mixed solvent;
B) mixed solvent of methyl alcohol or ethanol and ester, the volume ratio of methyl alcohol or ethanol and ester are 1:0.5 ~ 1:2, and described ester is R 1C (O) OR 2, R wherein 1Be C 1-4Alkyl or C 1-4Cycloalkyl, R 2For being C 1-4Alkyl or C 1-4Cycloalkyl is single ester solvent;
C) mixed solvent of methyl alcohol or ethanol and ketone, the volume ratio of methyl alcohol or ethanol and ketone are 1:0.5 ~ 1:2, and described ketone is R 3C (O) R 4, R wherein 3Be C 1-4Alkyl or C 1-4Cycloalkyl, R 4Be C 1-4Alkyl or C 1-4Cycloalkyl is single ketone solvent.
9. according to each described preparation method in the claim 1 ~ 5, it is characterized in that the volume ratio of water in the mixed solvent of described organic solvent and water is 1% ~ 10%, it is one of following that organic solvent is selected from:
A) two kinds in methyl alcohol, ethanol, n-propyl alcohol, Virahol, propyl carbinol, sec-butyl alcohol, isopropylcarbinol, the Pentyl alcohol;
B) mixed solvent of methyl alcohol or ethanol and ester, wherein the volume ratio of methyl alcohol or ethanol and ester is 1:0.5 ~ 1:1.5, and described ester is selected from a kind of in ethyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butylacetate, the isobutyl acetate;
C) mixed solvent of methyl alcohol or ethanol and ketone, the volume ratio of methyl alcohol or ethanol and ketone are 1:0.5 ~ 1:1.5, and described ketone is selected from a kind of in acetone, butanone, methyl isopropyl Ketone, methyl butyl ketone, the methyl iso-butyl ketone (MIBK).
10. according to each described preparation method in the claim 1 ~ 5, it is characterized in that her agate replaces the molar ratio example of Buddhist nun and methanesulfonic to be 1:1, the volume ratio of water is 2% ~ 6% in the mixed solvent of described organic solvent and water, and it is one of following that organic solvent is selected from:
A) mixed solvent of the mixed solvent of methyl alcohol and Virahol or ethanol and Virahol;
B) mixed solvent of ethanol and ethyl acetate, wherein the volume ratio of ethanol and ethyl acetate is 1:1;
C) mixed solvent of ethanol and methyl iso-butyl ketone (MIBK), the volume ratio of ethanol and methyl iso-butyl ketone (MIBK) are 1:1.
CN2011100441918A 2011-02-23 2011-02-23 New preparation method of alpha crystal form of imatinib mesylate Pending CN102146073A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103570677B (en) * 2012-08-02 2017-03-01 广东东阳光药业有限公司 A kind of preparation method of alpha-crystal form imatinib mesylate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1264375A (en) * 1997-07-18 2000-08-23 诺瓦提斯公司 Crystal modification of N-phenyl-2-pyrimidineamine derivative, processes for its manufacture and its use
WO2005095379A2 (en) * 2004-04-02 2005-10-13 Instytut Farmaceutyczny Crystalline methanesulfonic acid addition salts of imatinib
WO2006048890A1 (en) * 2004-11-04 2006-05-11 Sun Pharmaceutical Industries Limited Imatinib mesylate crystal form and process for preparation thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1264375A (en) * 1997-07-18 2000-08-23 诺瓦提斯公司 Crystal modification of N-phenyl-2-pyrimidineamine derivative, processes for its manufacture and its use
WO2005095379A2 (en) * 2004-04-02 2005-10-13 Instytut Farmaceutyczny Crystalline methanesulfonic acid addition salts of imatinib
WO2006048890A1 (en) * 2004-11-04 2006-05-11 Sun Pharmaceutical Industries Limited Imatinib mesylate crystal form and process for preparation thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103570677B (en) * 2012-08-02 2017-03-01 广东东阳光药业有限公司 A kind of preparation method of alpha-crystal form imatinib mesylate

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