A compound of formula I: ##STR1## wherein R is hydrogen; oran alkyl, alkenyl or alkynyl group of up to 6 carbon atoms; nis O; 1 or 2; Z represents --CH.dbd.CH-- or --S--; each X independently represents halogeno, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro or trifluoromethyl; and Y represents a group of formula: ##STR2## or a pharmaceutically acceptable salt or ester thereof.
公式I的化合物:##STR1## 其中R为氢;或者是由最多6个碳原子的烷基,烯基或炔基组成的基团;n为O;1或2;Z代表--CH.dbd.CH--或--S--;每个X分别代表卤素,C.sub.1-C.sub.4烷基,C.sub.1-C.sub.4烷氧基,硝基或三
氟甲基;而Y代表下列公式的基团:##STR2## 或其药学上可接受的盐或酯。