An imidazopyridine compound of the following formula :
wherein
R1 is lower alkynyl,
R2 is lower alkyl,
R3 is lower alkyl,
R4 is amino or a protected amino.
R5 is hydrogen; lower alkyl which may have suitable substituents(s); halogen; nitro; amino; a protected amino; a protected carboxy;
or N.N-di(lower)alkylsulfamoyl, and
A is lower alkylene,
and a pharmaceutically acceptable salt thereof, processes for their preparation and pharmaceutical compositions comprising them in admixture with pharmaceutically acceptable carriers.
下式的
咪唑吡啶化合物 :
其中
R1 是低级炔基
R2 是低级烷基
R3 是低级烷基
R4 是
氨基或受保护的
氨基
R5 是氢;可带有适当取代基的低级烷基;卤素;硝基;
氨基;受保护
氨基;受保护羧基;
或 N.N-二(低级)烷基
氨基磺酰基,以及
A 是低级亚烷基、
及其药学上可接受的盐、其制备方法以及由它们与药学上可接受的载体混合而成的药物组合物。