Industrial Synthesis of 4-Chloro,11β-arylestradiol: How to Circumvent a Poor Diastereoselectivity
摘要:
An industrial synthesis of 11beta-arylestrone derivatives is described, based on the conjugate opening of a mixture of allylic 5(10)-alpha and -beta epoxides by an aryl cuprate generated catalytically, followed by hydrolysis and subsequent aromatisation of the isomeric mixture of arylation products. An original method for selective 4-chlorination of estrone derivatives is also described.
Recent developments in the synthesis of 11β-aryl-estrone derivatives
摘要:
An industrial synthesis of 11beta-aryl-estrone derivatives is described, based on the 1,4-addition of the aryl side-chain, as a cuprate. oil to a mixture of allylic 5(10) alpha and beta epoxides, followed by hydrolysis and subsequent aromatization. (C) 2003 Elsevier Ltd. All rights reserved.
Novel method and intermediates for preparing 19-norsteroid compounds
申请人:Aventis Pharma S.A.
公开号:US20040229853A1
公开(公告)日:2004-11-18
The subject of the invention is a method for preparing compounds of general formula (I):
1
in which A, Z, R
3
are as defined in the description, and the intermediate compounds for carrying out this method.
A process for the preparation of compounds of formula (I)
1
in which
R
1
, R
2
, R
3
and n are defined as indicated in the description, use of said compounds as intermediates for the preparation of estrogen derivatives as well as the intermediates of this process.
NOVEL METHOD AND INTERMEDIATES FOR PREPARING 19-NORSTEROID COMPOUNDS
申请人:Prat Denis
公开号:US20110046402A1
公开(公告)日:2011-02-24
The subject of the invention is a method for preparing compounds of general formula (I):
in which A, Z, R
3
are as defined in the description, and the intermediate compounds for carrying out this method.