A compound of the formula (I):
wherein:
R1 is chlorine, difluoromethyl, trifluoromethyl or cyano; and
R2is a group having the formula:
wherein:
X is halogen, cyano, nitro or amino;
Y1 is lower alkyl or lower alkoxy; and
Z is halogen;
or a pharmaceutically acceptable salt thereof.
化合物的公式(I)如下:其中:R1是
氯,二
氟甲基,三
氟甲基或
氰基;R2是具有以下公式的基团:其中:X是卤素,
氰基,硝基或
氨基;Y1是低碳基或低碳氧基;Z是卤素;或其药学上可接受的盐。