Title:
3-CEPHEM DERIVATIVE CRYSTAL AND METHOD FOR PREPARING THE SAME
Document Type and Number:
WIPO Patent Application WO/2001/023393
Kind Code:
A1
Abstract:
A method for preparing crystals of a 3-cephem derivative, characterized in that it comprises subjecting a 3-cephem derivative in the form of an amorphous powder or an oil to a crystallization by the use of a good solvent and a poor solvent comprising carbon dioxide in a supercritical or subcritical state, thereby giving a 3-cephem derivative in a crystaline state; and crystals of a 3-cephem derivative.
Inventors:
MORIYOSHI TAKASHI (JP)
UOSAKI YASUHIRO (JP)
KAMEYAMA YUTAKA (JP)
SUZUKI DAISUKE (JP)
SEO YOSHIKO (JP)
UOSAKI YASUHIRO (JP)
KAMEYAMA YUTAKA (JP)
SUZUKI DAISUKE (JP)
SEO YOSHIKO (JP)
Application Number:
PCT/JP2000/006693
Publication Date:
April 05, 2001
Filing Date:
September 28, 2000
Export Citation:
Assignee:
OTSUKA KAGAKU KK (JP)
MORIYOSHI TAKASHI (JP)
UOSAKI YASUHIRO (JP)
KAMEYAMA YUTAKA (JP)
SUZUKI DAISUKE (JP)
SEO YOSHIKO (JP)
MORIYOSHI TAKASHI (JP)
UOSAKI YASUHIRO (JP)
KAMEYAMA YUTAKA (JP)
SUZUKI DAISUKE (JP)
SEO YOSHIKO (JP)
International Classes:
C07D501/00; C07D501/12; C07D501/24; (IPC1-7): C07D501/12; C07D501/24
Domestic Patent References:
WO1995007283A1 | 1995-03-16 |
Foreign References:
EP0126351A1 | 1984-11-28 | |||
EP0319019A2 | 1989-06-07 |
Other References:
See also references of EP 1227100A4
Attorney, Agent or Firm:
Tamura, Iwao (Terauchi 1-chome Toyonaka-shi, Osaka, JP)
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