[EN] EXEMESTANE AND ITS INTERMEDIATES AND METHODS OF MAKING THE SAME<br/>[FR] EXEMESTANE ET SES PRODUITS INTERMEDIAIRES ET SES PROCEDES DE FABRICATION
申请人:CEDARBURG PHARMACEUTICALS INC
公开号:WO2005070951A1
公开(公告)日:2005-08-04
A method is provided for preparing an aromatase inhibitor of formula (I) wherein each of R1, R2, R3, R4, independently, is hydrogen, halogen or Cl-C6 alkyl. In one form, the aromatase inhibitor is exemestane wherein each of R1, R2, R3, R4 is hydrogen. In the method, a compound of formula (II) wherein R1, R2, R3, R4 are as defined above and R is alkylene, is reacted with a deprotonating agent and a compound of the formula R5SO2X wherein R5 is C1-C5 alkyl and X is halogen so as to obtain a compound of formula (III) wherein R1, R2, R3, R4, R5 are as defined above. The compound of Formula (III) is then reacted with a base to form an aromatase inhibitor of formula (I).
提供了一种制备化学式(I)中的芳香化酶抑制剂的方法,其中R1、R2、R3、R4中的每一个独立地是氢、卤素或Cl-C6烷基。在一种形式中,芳香化酶抑制剂是依美曲塞(exemestane),其中R1、R2、R3、R4中的每一个是氢。在该方法中,将化学式(II)中的化合物与脱质子化剂和化学式R5SO2X中的化合物反应,其中R1、R2、R3、R4如上定义,R为烷基,以获得化学式(III)中的化合物,其中R1、R2、R3、R4、R5如上定义。然后将化学式(III)中的化合物与碱反应,形成化学式(I)中的芳香化酶抑制剂。