Title:
9α,21-ジハロ-プレグナン-11β,17α-ジオール-20-オンの17-エステルの調製のためのプロセス
Document Type and Number:
Japanese Patent JP5061061
Kind Code:
B2
Abstract:
The invention provides an improved process for the preparation of 17-esters of 9 alpha ,21-dihalo-pregnane-11 beta ,17 alpha -diol-20-ones, and in particular for the preparation of 17-esters of anti-inflammatory steroids according to the above-mentioned scheme, wherein RCO, R<1>, X, Y and the dotted line are as defined in the specification. The novel process is especially suitable for the preparation of Mometasone Furoate.
Inventors:
Dow-AEON Albert Quoc
David J. S. Sai
Butterfly-hontan
The Oyeon Fu
David J. S. Sai
Butterfly-hontan
The Oyeon Fu
Application Number:
JP2008203650A
Publication Date:
October 31, 2012
Filing Date:
August 06, 2008
Export Citation:
Assignee:
Schering Corporation
International Classes:
C07J17/00; C07J7/00; C07J71/00
Domestic Patent References:
| JP57146800A |
Foreign References:
| US2713587 | ||||
| US2793207 | ||||
| US3440252 | ||||
| US3502700 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita