The invention provides 11β-hydroxyandrosta-4-ene-3-one compounds of Formula I, or physiologically acceptable salts or solvates thereof:
wherein R
4
represents a moiety selected from a group consisting of (A), (B) and (C), with a proviso that when R
4
represents moiety (C), Z is S:
Process for Producing Optically Active Chromene Oxide Compound
申请人:Kondo Shoichi
公开号:US20090043100A1
公开(公告)日:2009-02-12
[Problems] To provide an efficient process for producing an optically active chromene oxide compound which is an important intermediate for a benzopyran compound effective in the treatment of arrhythmia.
[Means For Solving Problems] The process for producing an optically active chromene oxide compound comprises using an optically active titanium complex represented by, e.g., the formula (1) or (2)
as a catalyst to asymmetrically oxidize an optically active chromene compound with high enantioselectivity in high chemical yield.
PROCESS FOR PRODUCING OPTICALLY ACTIVE CHROMENE OXIDE COMPOUND
申请人:Nissan Chemical Industries, Ltd.
公开号:EP2003135A2
公开(公告)日:2008-12-17
[PROBLEMS] To provide an efficient process for producing an optically active chromene oxide compound which is an important intermediate for a benzopyran compound effective in the treatment of arrhythmia.
[MEANS FOR SOLVING PROBLEMS] The process for producing an optically active chromene oxide compound comprises using an optically active titanium complex represented by, e.g., the formula (1) or (2)
as a catalyst to asymmetrically oxidize an optically active chromene compound with high enantioselectivity in high chemical yield.