The present invention provides a compound of the Formula II:
wherein A is:
R
1
is CH
3
, CF
3
, or F;
R
2
is H, CH
3
, or F;
R
3
is CH
3
, OCH
3
, OH, F;
R
4
is OH or CH
2
OH; and
X is CH or N;
or a pharmaceutically acceptable salt thereof.
本发明提供了以下式子的化合物II:
其中,A是:R1是
CH3,
CF3或F;R2是H, 或F;R3是 ,O ,OH,F;R4是OH或CH2OH;X是CH或N;或其药学上可接受的盐。