Compounds of the formula ##STR1## where R.sub.1 is hydrogen, lower alkyl containing one to three carbon atoms, cycloalkyl lower alkyl containing four to seven carbon atoms, or benzyl; and R.sub.2 is hydrogen, halogen, alkoxy containing one to three carbon atoms, trifluoromethyl; and pharmaceutically acceptable acid addition salts thereof are useful as anti-depressants.
                            式子为##STR1##的化合物,其中R.sub.1为氢,含有一到三个碳原子的低烷基,含有四到七个碳原子的环烷基低烷基或苄基; R.sub.2为氢,卤素,含有一到三个碳原子的烷氧基,三
氟甲基;以及其药学上可接受的酸盐加合物,可用作抗抑郁剂。