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.
本发明涉及一种化合物,其化学式为1,其中R1为卤素或较低烷基;R2为氢、较低烷基、环烷基、-(CH2)m-苯基,其中苯环可以被较低烷氧基取代,或为-(CH2)m-吲哚基;R3为-C(O)O-较低烷基、-C(O)OH或五元杂环芳基,这些环可以被较低烷基或环烷基取代;n为0、1或2;m为0、1或2;或其药学上可接受的酸加成盐。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。