[EN] ESTRADIOL-16 alpha -CARBOXYLIC ACID ESTERS AS LOCALLY ACTIVE ESTROGENS<br/>[FR] ESTERS D'ACIDE CARBOXYLIQUES OESTRADIOL-16 DOLLAR G(A) UTILES EN TANT QU'OESTROGENES ACTIFS AU NIVEAU LOCAL
                        
                            
                                申请人:UNIV YALE
                            
                            
                                公开号:WO2002058634A2
                            
                            
                                公开(公告)日:2002-08-01
                            
                            The present invention relates to analogs of estradiol, which, in their most preferred embodiment, act as locally active estrogens without significant systemic action. A series of 16α-carboxylic acid substituted steroids sand their esters is presented which exhibit excellent biological activity for use in pharmaceutical compositions for the treatment of symptomology associated with menopause. The present invention is therefore directed to compounds according to the structure: I  Where R is H, a C1 to C5 alkyl, vinyl, CF3, CH2CH2F, CH2CHF2 or CH2CF3; and m is from 0-2, or a pharmaceutically acceptable salt thereof. Preferably, R is methyl, ethyl, propyl, iso-propyl, butyl, iso-butyl, pentyl, neo-pentyl, vinyl, CF3, CH2CH2F, CH2CHF2 or CH2CF ?3? and m is 0. More preferbly, R is methyl, ethyl, CH2CH2F, CH2CHF2 or CH2CF2 and m is 0.