Phenylalkylderivate, diese Verbindungen enthaltende Arzneimittel und Verfahren zu ihrer Herstellung
申请人:Dr. Karl Thomae GmbH
公开号:EP0529253A1
公开(公告)日:1993-03-03
Die Erfindung betrifft Phenylalkylderivate der allgemeinen Formel
in der
Ra bis Rd, A, B und n wie im Anspruch 1 definiert sind, deren Isomerengemische, deren Tautomere, deren Enantiomere und deren Salze, welche wertvolle Eigenschaften aufweisen.
Die neuen Verbindungen stellen insbesondere Angiotensin-Antagonisten dar.
[EN] IMPROVED SYNTHESIS OF OPTICALLY PURE (S) - 3-CYANO-5-METHYL-HEXANOIC ACID ALKYL ESTER, AN INTERMEDIATE OF (S)- PREGABALIN<br/>[FR] SYNTHÈSE AMÉLIORÉE D'UN ESTER ALKYLIQUE OPTIQUEMENT PUR DE L'ACIDE (S) - 3-CYANO-5-MÉTHYL-HEXANOÏQUE, INTERMÉDIAIRE DE LA (S)-PRÉGABALINE
申请人:LUPIN LTD
公开号:WO2011141923A2
公开(公告)日:2011-11-17
The present invention is directed towards synthesis of (S) - 3-cyano-5-methyl-hexanoic acid ethyl ester. A cost effective, eco-friendly process for preparation of enantiomerically pure (S)-3-cyano-5-methyl-hexanoic acid alkyl ester, intermediate of γ-amino acids, particularly (S)-pregabalin.
Access to β‐Ketonitriles through Nickel‐Catalyzed Carbonylative Coupling of α‐Bromonitriles with Alkylzinc Reagents
作者:Aske S. Donslund、Karoline T. Neumann、Nicklas P. Corneliussen、Ebbe K. Grove、Domenique Herbstritt、Kim Daasbjerg、Troels Skrydstrup
DOI:10.1002/chem.201902206
日期:2019.7.25
Herein, we report a nickel‐catalyzed carbonylative coupling of α‐bromonitriles and alkylzinc reagents with near stoichiometric carbon monoxide to give β‐ketonitriles in good yields. The reaction is catalyzed by a readily available and stable nickel(II) pincercomplex. The developed protocol tolerates substrates bearing a variety of functional groups, which would be problematic or incompatible with
Phenylalkyl derivatives, with pharmaceutical activity
申请人:Dr. Karl Thomae GmbH
公开号:US05519138A1
公开(公告)日:1996-05-21
A phenylalkyl derivative of the formula ##STR1## wherein R.sub.a to R.sub.f, A and B are substituents and n is the number 0 or 1. These phenylalkyl derivatives possess angiotensin antagonist activity.