[EN] 17.BETA- (ALPHA-HYDROXY) -ESTERS OF ANDROSTANES AS INTERMEDIATES FOR THE PREPARATION FOR THE PREPARATION OF 17.BETA.-FLUORINATED-ANDROSTANE ESTERS [FR] ESTERS DE 17-BETA-(ALPHA-HYDROXY) D'ANTROSTANES, UTILISES COMME INTERMEDIAIRES DANS LA PREPARATION D'ESTERS D'ANDROSTANE 15-BETA FLUORES.
[EN] 17.BETA- (ALPHA-HYDROXY) -ESTERS OF ANDROSTANES AS INTERMEDIATES FOR THE PREPARATION FOR THE PREPARATION OF 17.BETA.-FLUORINATED-ANDROSTANE ESTERS [FR] ESTERS DE 17-BETA-(ALPHA-HYDROXY) D'ANTROSTANES, UTILISES COMME INTERMEDIAIRES DANS LA PREPARATION D'ESTERS D'ANDROSTANE 15-BETA FLUORES.
17.Beta-(alpha-hydroxy)-esters of androstanes as intermediates for the preparation of 17.beta-fluorinated-androstane esters
申请人:Cainelli Adele Gianfranco
公开号:US20060116359A1
公开(公告)日:2006-06-01
Process for the preparation of polyhalogenated steroids, in particular of androstanic fluoro derivatives corticosteroids by means of the formation of new androstanic S-hydroxy alkyl or aralkyl-17-carbothioate intermediates.