Search International and National Patent Collections

1. (WO1997011078) PROCESS FOR THE PREPARATION OF GALANTHAMINE AND ITS DERIVATIVES

Pub. No.:    WO/1997/011078    International Application No.:    PCT/GB1996/002335
Publication Date: Mar 27, 1997 International Filing Date: Sep 23, 1996
IPC: C07D 491/10
C12P 17/18
Applicants: CHIROSCIENCE LIMITED
BANNISTER, Robin, Mark
McCAGUE, Raymond
Inventors: BANNISTER, Robin, Mark
McCAGUE, Raymond
Title: PROCESS FOR THE PREPARATION OF GALANTHAMINE AND ITS DERIVATIVES
Abstract:
A process for preparing a compound having a formula (4) or (5), in either optically-enriched or racemic form, wherein R?1, R2, R3 and R4¿ are independently selected from hydrogen, alkyl, aryl, alkaryl, aralkyl and acyl groups, comprises mixing with a plant extract an oxidative cyclisation precursor of the said compound.