Compounds of formula (II): ##STR1## or a pharmaceutically acceptable salt thereof, in which X is an oxygen atom or a bond, R.sup.1 is a hydrogen, fluorine, chlorine or bromine atom or a trifluoromethyl or C.sub.1-4 alkyl group, each of R.sup.2 and R.sup.3 is a hydrogen atom or a C.sub.1-4 alkyl group, R.sup.4 is a C.sub.1-4 alkyl group, R.sup.5 is a hydrogen atom or a C.sub.1-4 alkyl group, and n is an integer of from 1 to 3; are useful as anti-obesity and/or anti-hyperglycaemic agents.
化合物的
化学式(II):##STR1##或其药用盐,其中X是氧原子或键,R.sup.1是氢、
氟、
氯或
溴原子或三
氟甲基或C.sub.1-4烷基基团,R.sup.2和R.sup.3各自是氢原子或C.sub.1-4烷基基团,R.sup.4是C.sub.1-4烷基基团,R.sup.5是氢原子或C.sub.1-4烷基基团,n是1至3的整数;可用作抗肥胖和/或抗高血糖剂。