申请人:Kunnen Kevin
公开号:US20080234505A1
公开(公告)日:2008-09-25
A method is provided for preparing an aromatase inhibitor of formula (I) wherein each of R
1
, R
2
, R
3
, R
4
, independently, is hydrogen, halogen or C
1
-C
6
alkyl. In one form, the aromatase inhibitor is exemestane wherein each of R
1
, R
2
, R
3
, R
4
is hydrogen. In the method, a compound of formula (II) wherein R
1
, R
2
, R
3
, R
4
are as defined above and R is alkylene, is reacted with a deprotonating agent and a compound of the formula R
5
SO
2
X wherein R
5
is C
1
-C
5
alkyl and X is halogen so as to obtain a compound of formula (III) wherein R
1
, R
2
, R
3
, R
4
, R
5
are as defined above. The compound of Formula (III) is then reacted with a base to form an aromatase inhibitor of formula (I).
提供了一种制备式(I)芳香化酶抑制剂的方法,其中R1,R2,R3,R4分别为氢,卤素或C1-C6烷基。在一种形式中,芳香化酶抑制剂是依西美坦,其中R1,R2,R3,R4均为氢。在该方法中,将式(II)化合物与脱质子化剂和式R5SO2X的化合物反应,其中R1,R2,R3,R4如上所定义,R为烷基,以获得式(III)化合物,其中R1,R2,R3,R4,R5如上所定义。然后,将式(III)化合物与碱反应以形成式(I)芳香化酶抑制剂。