WO2004016589A2 - Procede de production de donepezil hydrochlorure tres pur - Google Patents
Procede de production de donepezil hydrochlorure tres pur Download PDFInfo
- Publication number
- WO2004016589A2 WO2004016589A2 PCT/IL2003/000665 IL0300665W WO2004016589A2 WO 2004016589 A2 WO2004016589 A2 WO 2004016589A2 IL 0300665 W IL0300665 W IL 0300665W WO 2004016589 A2 WO2004016589 A2 WO 2004016589A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- donepezil
- purity
- hydrochloride
- donepezil hydrochloride
- acid
- Prior art date
Links
- 0 COc(cc1CC2CC3CCN(CN*)CC3)c(*)cc1C2=O Chemical compound COc(cc1CC2CC3CCN(CN*)CC3)c(*)cc1C2=O 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D211/30—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by doubly bound oxygen or sulfur atoms or by two oxygen or sulfur atoms singly bound to the same carbon atom
- C07D211/32—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by doubly bound oxygen or sulfur atoms or by two oxygen or sulfur atoms singly bound to the same carbon atom by oxygen atoms
Definitions
- the present invention relates to a process for the preparation of highly pure Donepezil hydrochloride.
- ARICEPT Applicant: Eisai Medical Research
- tablettes useful as a therapeutic and ameliorating agent (tablets) for Alzheimer-type senile dementia, particularly as a prophylactic.
- Donepezil hydrochloride is produced by first producing Donepezil, which is a free base, and then converting it into a hydrochloride.
- Donepezil base is used as a precursor for the production of Donepezil hydrochloride.
- Donepezil hydrochloride was prepared from the resulting purified Donepezil base by treating the base with HCl/EtOAc and re-crystallizing the resulting solid from MeOH/i-Pr 2 0 (H. Sugimoto et al., J. Med. Chem., 1995, v. 38, 481 and Eisai Co., U.S. 5,100,901).
- Donepezil hydrochloride An additional process for production of Donepezil hydrochloride involves reacting a Donepezil intermediate with halogenated benzyl to obtain a Donepezil quaternary ammonium salt, hydrogenation of the quaternary ammonium salt to produce Donepezil base, followed by addition of HCl to produce Donepezil hydrochloride (US 6,252,081).
- the present invention provides according to a first aspect thereof, a process for preparing highly pure Donepezil hydrochloride represented by the following formula
- the obtained salt has a liquid chromatography (LC) purity (relative area method) of higher than 97% and a content of each individual impurity not exceeding 0.02 % (by area), which process comprises: intramolecular cyclization of 2-(3,4-dimethoxybenzyl)-3-(N-benzyl- 4-piperidine)propionic acid [II]
- Donepezil base treating the donepezil base with HCl without isolating Donepezil base to form Donepezil hydrochloride; and optionally crystallizing the Donepezil hydrochloride to give the salt of desired LC purity.
- Donepezil hydrochloride prepared by the method of the present invention has a liquid chromatography (LC) purity (relative area method) of at least 99.9%.
- LC liquid chromatography
- the present invention provides a scalable industrial process for the preparation of pure Donepezil hydrochloride having a liquid chromatography purity (relative area method) of higher than 97 %, preferably higher than 98%, more preferably higher than 99% and even more preferably higher than 99.9%, and with a content of each individual impurity not exceeding 0.02 % (by area), which process comprises forming Donepezil base in solution and treating the Donepezil base solution with HCl without prior isolation of Donepezil base; and optionally re-crystallizing the hydrochloride salt to give Donepezil hydrochloride of desired liquid chromatography purity.
- a liquid chromatography purity relative area method
- Donepezil base in solution may be obtained by intramolecular cyclization of 2-(3,4-dimethoxybenzyl)-3-(N-benzyl- 4-piperidine)propionic acid [II] or a salt thereof, as described above or by any other process which affords highly pure Donepezil base as end product, without prior isolation and purification.
- the described invention provides a process for the preparation of highly pure Donepezil hydrochloride by cyclization of a compound of formula [II] or a salt thereof.
- the cyclization of compound [II] is carried out under
- the cyclization in the process of the present invention is carried out in the presence of protic acids or Lewis acids or a mixture of protic and Lewis acids.
- protic acids are trifluoromethanesulfonic acid, methanesulfonic acid, polyphosphoric acid, fluoro- or chlorosulfonic acid, sulfuric acid, hydrogen fluoride and hydrogen chloride.
- Lewis acids are zinc chloride, zinc bromide, aluminum chloride, aluminum bromide, titanium chloride, boron fluoride, phosphorus pentoxide, phosphorus oxychloride, phosphorus pentachloride, phosphorus trichloride, thionyl chloride and sulfuryl chloride.
- the cyclization may be carried out in the presence of a solvent.
- the solvent is a halogenated solvent.
- halogenated solvents are dichloromethane, chloroform, dichloroethane, tetrachloroethane, chlorobenzene, dichlorobenzene and mixtures thereof.
- the solvent is nitromethane, nitroethane, nitrobenzene, ether and mixtures thereof.
- the compound [II] or its salt has liquid chromatography purity (relative area method) of at least 97 %. More preferably, the compound [II] or its salt has liquid chromatography purity (relative area method) of at least 98 %. Most preferably, the compound [II] or its salt has liquid chromatography purity (relative area method) of at least 99 %.
- liquid chromatography purity relative area method
- liquid cliromatography (LC) purity was determined by separating a sample by high performance liquid chromatography (HPLC) under the following conditions, and calculating the area percentage thereof.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrogenated Pyridines (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003249565A AU2003249565A1 (en) | 2002-08-14 | 2003-08-11 | Process for production of highly pure donepezil hydrochloride |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL151253 | 2002-08-14 | ||
IL15125302A IL151253A0 (en) | 2002-08-14 | 2002-08-14 | Process for production of highly pure donepezil hydrochloride |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004016589A2 true WO2004016589A2 (fr) | 2004-02-26 |
WO2004016589A3 WO2004016589A3 (fr) | 2004-06-10 |
Family
ID=29596422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL2003/000665 WO2004016589A2 (fr) | 2002-08-14 | 2003-08-11 | Procede de production de donepezil hydrochlorure tres pur |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003249565A1 (fr) |
IL (1) | IL151253A0 (fr) |
WO (1) | WO2004016589A2 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007135408A1 (fr) * | 2006-05-18 | 2007-11-29 | Pliva Hrvatska D.O.O. | Impuretés du donépézil |
WO2008126995A1 (fr) * | 2007-04-12 | 2008-10-23 | Dong Wha Pharm. Ind. Co., Ltd. | Procédé de préparation d'un intermédiaire de donépézil |
US7592459B2 (en) | 2004-09-29 | 2009-09-22 | Chemagis Ltd. | Use of purified donepezil maleate for preparing pharmaceutically pure amorphous donepezil hydrochloride |
KR100953038B1 (ko) * | 2007-12-12 | 2010-04-14 | 일동제약주식회사 | 염산 도네페질의 개량된 제조방법 |
WO2011051957A2 (fr) * | 2009-10-30 | 2011-05-05 | Neuland Laboratories Ltd. | Procédé de préparation d'hydrochlorure de donépézil |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997022584A1 (fr) * | 1995-12-15 | 1997-06-26 | Pfizer Inc. | Procedes de preparation de 1-benzyl-4-((5,6-dimethoxy-1-indanon)-2-yl)methylpiperidine et intermediaires utilises a cet effet |
WO2000009483A2 (fr) * | 1998-08-17 | 2000-02-24 | Finetech Ltd. | Nouveau procede et intermediaires pour la production de donepezil et de ses composes apparentes |
-
2002
- 2002-08-14 IL IL15125302A patent/IL151253A0/xx unknown
-
2003
- 2003-08-11 WO PCT/IL2003/000665 patent/WO2004016589A2/fr not_active Application Discontinuation
- 2003-08-11 AU AU2003249565A patent/AU2003249565A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997022584A1 (fr) * | 1995-12-15 | 1997-06-26 | Pfizer Inc. | Procedes de preparation de 1-benzyl-4-((5,6-dimethoxy-1-indanon)-2-yl)methylpiperidine et intermediaires utilises a cet effet |
WO2000009483A2 (fr) * | 1998-08-17 | 2000-02-24 | Finetech Ltd. | Nouveau procede et intermediaires pour la production de donepezil et de ses composes apparentes |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7592459B2 (en) | 2004-09-29 | 2009-09-22 | Chemagis Ltd. | Use of purified donepezil maleate for preparing pharmaceutically pure amorphous donepezil hydrochloride |
WO2007135408A1 (fr) * | 2006-05-18 | 2007-11-29 | Pliva Hrvatska D.O.O. | Impuretés du donépézil |
WO2008126995A1 (fr) * | 2007-04-12 | 2008-10-23 | Dong Wha Pharm. Ind. Co., Ltd. | Procédé de préparation d'un intermédiaire de donépézil |
KR100953038B1 (ko) * | 2007-12-12 | 2010-04-14 | 일동제약주식회사 | 염산 도네페질의 개량된 제조방법 |
WO2011051957A2 (fr) * | 2009-10-30 | 2011-05-05 | Neuland Laboratories Ltd. | Procédé de préparation d'hydrochlorure de donépézil |
WO2011051957A3 (fr) * | 2009-10-30 | 2012-10-04 | Neuland Laboratories Ltd. | Procédé de préparation d'hydrochlorure de donépézil |
Also Published As
Publication number | Publication date |
---|---|
AU2003249565A1 (en) | 2004-03-03 |
IL151253A0 (en) | 2003-04-10 |
AU2003249565A8 (en) | 2004-03-03 |
WO2004016589A3 (fr) | 2004-06-10 |
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