Title:
【発明の名称】改良された9α‐脱ハロゲン化方法
Document Type and Number:
Japanese Patent JP2604842
Kind Code:
B2
Abstract:
The present invention involves improved processes for the dehalogenation of 9 alpha -halosteroids (I) (I) to produce the corresponding 11 beta -hydroxy steroids (II) (II) which are known to be useful as pharmaceutical, where the improvements comprise (1) adding the 9 alpha -halo steroid (I) to the chromium and (2) using catalytic amounts of chromium in the presence of a means of converting chromium (II) to chromium (III).
Inventors:
Huber, Joel Yee
Fleming, Jeffrey A.
Fleming, Jeffrey A.
Application Number:
JP50699188A
Publication Date:
April 30, 1997
Filing Date:
July 22, 1988
Export Citation:
Assignee:
The Up John Company
International Classes:
C07J1/00; C07J3/00; C07J5/00; C07J7/00; C07J9/00; C07J75/00; (IPC1-7): C07J1/00; C07J3/00; C07J5/00; C07J7/00; C07J9/00
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)