申请人:Pfeifer Lance Allen
公开号:US20100099725A1
公开(公告)日:2010-04-22
The present invention is directed to compounds of the structural Formula: wherein: R
1
is H or —C
1
-C
3
alkyl; R
2
is selected from the group consisting of —H, —C
1
-C
4
alkyl, —C
1
-C
3
alkyl-CF
3
, phenyl, and pyridinyl; and R
3
is selected from the group consisting of —H, —C
1
-C
4
alkyl, —C
1
-C
3
alkyl-O—CH
3
, —CH
2
-cyclopropyl, CH
2
—C═CH
2
, —CH
2
CH
2
-(2-F-phenyl), and phenyl substituted with from 1 to 2 fluorines; provided that when R
1
and R
2
are each H, then R
3
is selected from the group consisting of —C
1
-C
4
alkyl, —C
1
-C
3
alkyl-O—CH
3
, —CH
2
-cyclopropyl, —CH
2
—C═CH
2
, —CH
2
CH
2
-(2-F-phenyl), and phenyl substituted with from 1 to 2 fluorines; or stereoisomers and pharmaceutically acceptable salts thereof.
本发明涉及结构式的化合物:其中:R1为H或-C1-C3烷基;R2选择自-H、-C1-C4烷基、-C1-C3烷基-CF3、苯基和吡啶基的组合;R3选择自-H、-C1-C4烷基、-C1-C3烷基-O-CH3、-CH2-环丙基、CH2-C═CH2、-CH2CH2-(2-F-苯基)和1至2个氟原子取代的苯基;但当R1和R2都为H时,R3选择自-C1-C4烷基、-C1-C3烷基-O-CH3、-CH2-环丙基、-CH2-C═CH2、-CH2CH2-(2-F-苯基)和1至2个氟原子取代的苯基;或其立体异构体和药学上可接受的盐。