[EN] METHOD FOR THE PRODUCTION OF FLUOROMETHYL - ESTERS OF ANDROSTAN- 17 - BETA - CARBOXYLIC ACIDS<br/>[FR] PROCÉDÉ DE PRODUCTION D'ESTERS FLUOROMÉTHYLIQUES D'ACIDES ANDROSTANE-17-BÊTA-CARBOXYLIQUES
申请人:HOVIONE INT LTD
公开号:WO2012160338A1
公开(公告)日:2012-11-29
The present invention relates to a method of preparing an organic biologically active compound of formula (I), wherein R1, R2, R3, R4,. X1, X2 and X3 are as defined in the specification, to certain novel intermediates obtainable from such a method and their use.