The present invention provides novel compounds of the formula, ##STR1## wherein R.sub.1 is hydrogen, halogen, alkyl or alkoxy; R.sub.2 may, for example, be hydrogen, alkyl, alkenyl, alkinyl or phenylalkyl, the phenyl ring of which may be mono-substituted with halogen, alkyl or alkoxy; and R.sub.3 is hydrogen, alkyl, thienyl, phenyl or phenyl which may be mono- or di-substituted with halogen, alkyl, alkoxy or alkylthio, useful, for example, as anti-depressants and analgesics.
本发明提供了新的化合物,其
化学式为 ##STR1## 其中R.sub.1是氢、卤素、烷基或烷氧基;R.sub.2可以是氢、烷基、烯基、炔基或苯基烷基,其中苯环可以被卤素、烷基或烷氧基单取代;R.sub.3是氢、烷基、
噻吩基、苯基或苯基,可以是单取代或双取代的卤素、烷基、烷氧基或烷
硫基,例如作为抗抑郁剂和镇痛剂。