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1. WO1997025330 - PROCESS FOR THE PREPARATION OF GALANTHAMINE

Publication Number WO/1997/025330
Publication Date 17.07.1997
International Application No. PCT/GB1997/000023
International Filing Date 06.01.1997
Chapter 2 Demand Filed 24.07.1997
IPC
C07D 491/10 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
491Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/-C07D459/290
02in which the condensed system contains two hetero rings
10Spiro-condensed systems
CPC
C07D 491/10
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
491Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
02in which the condensed system contains two hetero rings
10Spiro-condensed systems
Applicants
  • CHIROTECH TECHNOLOGY LIMITED [GB]/[GB] (AllExceptUS)
  • TIFFIN, Peter, David [GB]/[GB] (UsOnly)
Inventors
  • TIFFIN, Peter, David
Agents
  • GILL JENNINGS & EVERY
Priority Data
9600080.704.01.1996GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR THE PREPARATION OF GALANTHAMINE
(FR) PROCEDE DE PREPARATION DE GALANTHAMINE
Abstract
(EN)
The present invention comprises a process for the preparation of enantiomerically-enriched galanthamine from racemic galanthamine, and a process for increasing the enantiomeric excess of enantiomerically-enriched galanthamine, by direct crystallisation of galanthamine salts.
(FR)
La présente invention concerne un procédé de préparation de galanthamine enrichie en énantiomères, à partir de galanthamine racémique, ainsi qu'un procédé permettant d'accroître l'excédent énantiomère de galanthamine enrichie en énantiomères par cristallisation directe de sels de galanthamine.
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