Title:
改良されたクロロメチルセフェム誘導体調製方法
Document Type and Number:
Japanese Patent JP2006507289
Kind Code:
A
Abstract:
The present invention provides an improved process to produce the chloromethylcephem derivatives of the formula (I), wherein R>1< represents a carboxy-protecting group viz., substituted methyl group, which can be deprotected easily, such as t-butyl group, diphenylmethyl, 4-methoxybenzyl, 2-methoxybenzyl, 2-chlorobenzyl or benzyl group; R>2< represents hydrogen, (C>1<-C>4<)alkyl, substituted or unsubstituted phenyl or substituted or unsubstituted phenoxy group.
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Inventors:
Udayan Parayan Paranisami Sen Silkmar
Despandes Pandora Dungeon Balwand
Carale Sanjay Nibrutti
Lamar Padmanaburn
Despandes Pandora Dungeon Balwand
Carale Sanjay Nibrutti
Lamar Padmanaburn
Application Number:
JP2004547902A
Publication Date:
March 02, 2006
Filing Date:
October 23, 2003
Export Citation:
Assignee:
ORCHID CHEMICALS & PHARMACEUTICALS LIMITED
International Classes:
C07D501/18; C07D501/00; C07D501/08
Domestic Patent References:
| JPS60237061A | 1985-11-25 | |||
| JPS60115562A | 1985-06-22 | |||
| JPH03120288A | 1991-05-22 | |||
| JPS5390288A | 1978-08-08 | |||
| JPS59164771A | 1984-09-17 | |||
| JPS57169457A | 1982-10-19 | |||
| JPS5874689A | 1983-05-06 | |||
| JPS4941436B1 | 1974-11-08 | |||
| JPS50129590A | 1975-10-13 |
Attorney, Agent or Firm:
Koichi Washida