Compounds of the following formula ##STR1## are useful as central nervous system depressants, tranquilizers, sedatives, growth promotors, anti-convulsants and muscle relaxants in mammalian species.
以下公式##STR1##的化合物在哺乳动物中作为中枢神经系统
抑制剂、镇静剂、安眠药、生长
促进剂、抗惊厥剂和肌肉松弛剂方面具有用途。