An easy stereoselective synthesis of 5(10)-estrene-3β,17α-diol, a biological marker of pregnancy in the mare
摘要:
5(10)-Estrene-3 beta,17 alpha-diol is an essential reference material for doping analysis in horse-racing laboratories. It is used to detect misuse, for doping purpose, of the pregnancy status in the mare. Its stereoselective synthesis from 17 beta-estradiol-3-methyl ether (prepared from estrone or 17 beta-estradiol) was performed in four steps: (1) Mitsunobu inversion of the 17 beta-alcohol; (2) Birch reduction of the aromatic ring; (3) stereoselective reduction of the 3-ketone via Noyori asymmetric transfer hydrogenation; (4) chemoenzymatic purification. (C) 2014 Elsevier Inc. All rights reserved.
A variety of bone anabolic compounds are useful for maintaining and/or increasing bone mass, density, and/or strength in mammals. Preferred compounds enhance bone anabolic activity while minimizing or eliminating undesirable feminizing or masculinizing effects.
[EN] BONE ANABOLIC COMPOUNDS AND METHODS OF USE<br/>[FR] COMPOSES ANABOLISANTS OSSEUX ET LEURS PROCEDES D'UTILISATION
申请人:——
公开号:WO2003002058A9
公开(公告)日:2004-07-08
[EN] A variety of bone anabolic compounds are useful for maintaining and/or increasing bone mass, density, and/or strength in mammals. Preferred compounds enhance bone anabolic activity while minimizing or eliminating undesirable feminizing or masculinizing effects. [FR] L'invention concerne une variété de composés anabolisants que l'on peut utiliser pour conserver et/ou augmenter la masse, la densité et/ou la résistance osseuses chez les mammifères. Les composés préférés renforcent l'activité anabolisante osseuse tout en réduisant ou en éliminant les effets féminisants ou masculinisants indésirables.