Epoxidation of 17-oxo-15,16-Methylene Steroids with Sulfoxonium Ylides
申请人:Cabri Walter
公开号:US20080076915A1
公开(公告)日:2008-03-27
A process for the epoxidation of 17-oxo-15,16-methylene steroids, in particular of drospirenone precursors, comprising the use of sulfoxonium ylides, in particular of dimethylsulfoxonium methyl ylide. The process allows to prepare in good yields 17-spiro epoxides, which can be easily transformed into 17-spironolacto-steroids.
RETINOID X RECEPTOR-GAMMA AGONISTS AND RETINOID X RECEPTOR-ALPHA ANTAGONISTS FOR TREATMENT OF CANCER
申请人:St. JUDE CHILDREN'S RESEARCH HOSPITAL, INC.
公开号:US20160324874A1
公开(公告)日:2016-11-10
The invention is directed to the use of Retinoid X Receptor-gamma (RXR-gamma) agonists and Retinoid X Receptor-alpha (RXR-alpha) antagonists in treatment of cancer.
Epoxidation of 17-oxo-15,16-methylene steroids with sulfoxonium ylides
申请人:Antibioticos S.p.A.
公开号:EP1903051A3
公开(公告)日:2008-06-25
A process for the epoxidation of 17-oxo-15,16-methylene steroids, in particular of drospirenone precursors, comprising the use of sulfoxonium ylides, in particular of dimethylsulfoxonium methyl ylide. The process allows to prepare in good yields 17-spiro epoxides, which can be easily transformed into 17-spironolacto-steroids.
Several steroidal 6,6-ethylene-15,16-methylene 17-spirolactones were synthesized to find new progestogens that exhibit both progestational and antimineralocorticoidal activities. The influence of substituents in the 10- and 13-position of the steroidal framework on both properties was investigated. It was found that only compound 12, carrying methyl groups at the 10- and 13-positions, possesses high