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CA2219278C - Procedes de production d'acide (s)-3-(aminomethyl)-5-methylhexanoique - Google Patents

Procedes de production d'acide (s)-3-(aminomethyl)-5-methylhexanoique Download PDF

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Publication number
CA2219278C
CA2219278C CA002219278A CA2219278A CA2219278C CA 2219278 C CA2219278 C CA 2219278C CA 002219278 A CA002219278 A CA 002219278A CA 2219278 A CA2219278 A CA 2219278A CA 2219278 C CA2219278 C CA 2219278C
Authority
CA
Canada
Prior art keywords
acid
carbamoylmethyl
methylhexanoic acid
methylhexanoic
reacting
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.)
Expired - Fee Related
Application number
CA002219278A
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English (en)
Other versions
CA2219278A1 (fr
Inventor
Brian Keith Huckabee
Denis Martin Sobieray
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.)
Warner Lambert Co LLC
Original Assignee
Warner Lambert Co LLC
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
Priority claimed from US08/458,950 external-priority patent/US5616793A/en
Application filed by Warner Lambert Co LLC filed Critical Warner Lambert Co LLC
Publication of CA2219278A1 publication Critical patent/CA2219278A1/fr
Application granted granted Critical
Publication of CA2219278C publication Critical patent/CA2219278C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

La présente invention concerne un procédé de production d'acide (S)-(+)-3-(aminométhyl)-5-méthylhexanoïque, lequel procédé comprend les étapes suivantes: concentrer de l'isovaléraldéhyde avec un cyanoacétate d'alkyle de manière à former un ester d'alkyle d'acide 2-cyano-5-méthylhex-2-énoïque; faire réagir l'ester d'alkyle d'acide 2-cyano-5-méthylhex-2-énoïque avec un malonate de dialkyle de manière à former de l'acide 3-isobutylglutarique; former l'anhydride de l'acide 3-isobutylglutarique; faire réagir cet anhydride avec de l'ammoniac de manière à former de l'acide (+/-)-3-(carbamoylméthyl)-5-méthylhexanoïque; faire réagir l'acide (+/-)-3-(carbamoylméthyl)-5-méthylhexanoïque avec (R)-(+)- alpha -phényléthylamine de manière à obtenir le sel (R)-(+)- alpha -phényléthylamine de l'acide(R)-(-)-3-(carbamoylméthyl)-5-méthylhexanoïque; combiner ce sel avec un acide de manière à obtenir de l'acide (R)-(-)-3-(carbamoylméthyl)-5-méthylhexanoïque; et, enfin, faire réagir l'acide (R)-(-)-3-(carbamoylméthyl)-5-méthylhexanoïque avec un réactif de Hofmann de manière à obtenir de l'acide (S)-(+)-3-(aminométhyl)-5-méthylhexanoïque.
CA002219278A 1995-06-02 1996-04-26 Procedes de production d'acide (s)-3-(aminomethyl)-5-methylhexanoique Expired - Fee Related CA2219278C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/458,950 US5616793A (en) 1995-06-02 1995-06-02 Methods of making (S)-3-(aminomethyl)-5-methylhexanoic acid
US458,950 1995-06-02
PCT/US1996/005831 WO1996038405A1 (fr) 1995-06-02 1996-04-26 Procedes de production d'acide (s)-3-(aminomethyl)-5-methylhexanoique

Publications (2)

Publication Number Publication Date
CA2219278A1 CA2219278A1 (fr) 1996-12-05
CA2219278C true CA2219278C (fr) 2006-06-13

Family

ID=36587392

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002219278A Expired - Fee Related CA2219278C (fr) 1995-06-02 1996-04-26 Procedes de production d'acide (s)-3-(aminomethyl)-5-methylhexanoique

Country Status (1)

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CA (1) CA2219278C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109761838B (zh) * 2019-02-22 2024-12-31 浙江华海药业股份有限公司 一种制备普瑞巴林中间体和回收拆分剂的方法

Also Published As

Publication number Publication date
CA2219278A1 (fr) 1996-12-05

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