METHODS AND COMPOUNDS FOR PREPARING 3ALPHA-OXYGEN SUBSTITUTED STEROIDS
申请人:Ge Yu
公开号:US20120214987A1
公开(公告)日:2012-08-23
The invention relates to processes for preparing 3α-O-linked steroids including 3α-O-linked-androst-5-ene steroids and 3α-O-linked-5a-androstane steroids. In one process a 3α,4α-epoxy androst-5-en-17-one is predominately reduced at the epoxy moiety wherein reduction of the 3α,4α epoxy functional group occurs preferentially at position C4 with retention of configuration at position C3 to provide a 3α-O-linked-androst-5-ene steroid. In another process, conditions are provided for inversion of configuration of a 3β-hydroxy-androst-5-ene steroid by the Mitsunobu reaction to provide a 3α-O-linked-androst-5-ene steroid with reduced amounts of 3α,5α-cycloandrostane side-product impurities.
5-Androsten-3beta-ol steroid intermediates and processes for their preparation
申请人:——
公开号:US20040034215A1
公开(公告)日:2004-02-19
The present invention provides 5-androsten-3&bgr;-ol steroid intermediates and processes for their preparation.
本发明提供了5-雄烯-3β-醇类固醇中间体及其制备方法。
[EN] MICROBIAL PROCESS FOR THE PREPARATION OF 7-KETO DEHYDROEPIANDROSTERONE AND RELATED ANALOGS<br/>[FR] PROCESSUS MICROBIEN POUR LA PREPARATION DE 7-CETO DEHYDROEPIANDROSTERONE ET DE SES ANALOGUES APPARENTES
申请人:PHARMACIA & UPJOHN CO LLC
公开号:WO2005003148A1
公开(公告)日:2005-01-13
The present invention relates to a two part microbial process for the preparation of 7-oxo-5-androstene steroids of Formula III.
本发明涉及一种用于制备III式7-氧代-5-雄烯基甾烷类固醇的两部分微生物过程。
Use of DHEA derivatives on keratinous substances
申请人:L'OREAL
公开号:US20030113284A1
公开(公告)日:2003-06-19
Methods of improving the appearance of keratinous substances using at least one DHEA derivative such as the skin, hair, eyelashes and/or nails, in particular for preventing or treating cutaneous signs of ageing and/or a faded complexion and/or disorders of pigmentation of the skin or hair and/or drying of the skin and/or hyperseborrhoea and/or imperfections relating to hyperseborrhoea and/or sensitive skin and/or dandruff and/or hair loss and/or canities.
L'invention se rapporte à l'utilisation cosmétique d'au moins un dérivé de la DHEA pour améliorer l'apparence des matières kératiniques, tels que la peau, les cheveux, les cils et les ongles, en particulier pour prévenir ou traiter les signes cutanés du vieillissement et/ou le teint terne et/ou les troubles de pigmentation de la peau ou des cheveux et/ou le dessèchement de la peau et/ou l'hyperséborrhée et/ou les imperfections liées à l'hyperséborrhée et/ou les peaux sensibles et/ou les pellicules et/ou la chute des cheveux et/ou la canitie.
L'invention se rapporte également à un procédé de traitement cosmétique des matières kératiniques comprenant l'application topique sur celles-ci d'une composition renfermant au moins un dérivé de la DHEA dans un milieu physiologiquement acceptable.