申请人:——
公开号:US20030055042A1
公开(公告)日:2003-03-20
The present invention is a compound of formula
1
wherein
R
1
is halogen or lower alkyl;
R
2
is hydrogen, lower alkyl, cycloalkyl, —(CH
2
)
m
-phenyl, wherein the phenyl ring may be substituted by lower alkoxy, or is —(CH
2
)
m
-indolyl;
R
3
is —C(O)O-lower alkyl, —C(O)OH, or a five membered heteroaromatic group, which rings may be substituted by lower alkyl or cycloalkyl;
n is 0, 1 or 2;
m is 0, 1 or 2;
or a pharmaceutically acceptable acid addition salt thereof. Compound I shows high affinity and selectivity for GALA A &agr;5 receptor binding sites.
本发明是一种化合物,其化学式为
1
其中
R
1
是卤素或较低的烷基;
R
2
是氢、较低的烷基、环烷基、—(CH
2
)
m
-苯基,其中苯环可能被较低的烷氧基取代,或者是—(CH
2
)
m
-吲哚基;
R
3
是—C(O)O-较低的烷基、—C(O)OH,或者是一个五元杂环芳基,这些环可能被较低的烷基或环烷基取代;
n为0、1或2;
m为0、1或2;
或其药学上可接受的酸盐。化合物I显示出对GALA A &agr;5受体结合位点的高亲和力和选择性。