Title:
HALOGENATED beta-LACTAM COMPOUND AND PRODUCTION OF 3-HYDROXYCEPHEM DERIVATIVE THEREFROM
Document Type and Number:
WIPO Patent Application WO/1992/016532
Kind Code:
A1
Abstract:
A halogenated beta-lactam compound represented by general formula (III), wherein Ar represents optionally substituted aryl; R1 represents optionally protected amino; R2 represents hydrogen or a carboxyl blocking group; R3 represents hydrogen or a hydroxyl blocking group; and X represents halogen. A process for producing a 3-hydroxycephem derivative is represented by general formula (I) in an industrially advantageous manner by reducing the compound (III) either with a metallic reducing agent or electrolytically. In formula (I), R1, R2 and R3 are as defined above.
Inventors:
TORII SHIGERU (JP)
TANAKA HIDEO (JP)
TANIGUCHI MASATOSHI (JP)
SASAOKA MITIO (JP)
SHIROI TAKASHI (JP)
KAMEYAMA YUTAKA (JP)
KIKUCHI RYO (JP)
TANAKA HIDEO (JP)
TANIGUCHI MASATOSHI (JP)
SASAOKA MITIO (JP)
SHIROI TAKASHI (JP)
KAMEYAMA YUTAKA (JP)
KIKUCHI RYO (JP)
Application Number:
PCT/JP1992/000126
Publication Date:
October 01, 1992
Filing Date:
February 10, 1992
Export Citation:
Assignee:
OTSUKA KAGAKU KK (JP)
International Classes:
C07D205/095; C07D501/00; C07D501/08; C07D501/18; C07D501/59; C25B3/23; C25B3/25; (IPC1-7): C07D205/08; C07D501/08; C07D501/59; C25B3/04
Foreign References:
| JPH03255066A | 1991-11-13 | |||
| JPS5257188A | 1977-05-11 | |||
| JPS51105051A | 1976-09-17 | |||
| JPS51105088A | 1976-09-17 | |||
| JPS5257162A | 1977-05-11 | |||
| JPS50129590A | 1975-10-13 |
Other References:
Chem. Lett., No. 10, 1990, P. 1867-8.
Download PDF:
Previous Patent: CYCLIC KETAL DERIVATIVES
Next Patent: PROCESS FOR PRODUCING ALKOXYMAGNESIUM HALOGENIDES
Next Patent: PROCESS FOR PRODUCING ALKOXYMAGNESIUM HALOGENIDES