Title:
酢酸シプロテロンの改良された合成
Document Type and Number:
Japanese Patent JP2005523927
Kind Code:
A
Abstract:
The present invention relates to improved methods for synthesising cyproterone acetate (17 alpha -Acetoxy-6-chloro-1 alpha , 2 alpha -methylene-4,6-pregnadiene-3,20-dione) from solasodine. The methods of the invention are shorter as those of the prior art and therefore more economic.
Inventors:
Manos Roy Alanya
Manos Roy Gila Day
Buddhask Duane
Sri Parakit Pattana
Meier Lorant
Verner Rolf
Manos Roy Gila Day
Buddhask Duane
Sri Parakit Pattana
Meier Lorant
Verner Rolf
Application Number:
JP2004500763A
Publication Date:
August 11, 2005
Filing Date:
April 14, 2003
Export Citation:
Assignee:
Boehringer Ingelheim International GmbH
International Classes:
C12P33/02; A61K31/573; A61P5/28; A61P5/34; C07B53/00; C07J7/00; C07J53/00; C07J71/00; C12R1/06; (IPC1-7): C07J53/00; A61P5/28; A61P5/34; C07J7/00; C07J71/00; C12P33/02
Foreign References:
| US3234093A | 1966-02-08 |
Attorney, Agent or Firm:
Sadao Kumakura
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Koji Hirayama
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Koji Hirayama