The synthesis and pharmacological properties of 7-chloro-5-(2-chlorophenyl)-2-(2-dimethylaminoethylthio)-3H-1, 4-benzodiazepine (III-1) and related compounds are described. Compound III-1 was prepared from the thiolactam (II-1) by treatment with 2-dimethylaminoethyl chloride in the presence of base in aqueous methanol and 7-chloro-5-(2-ohlorophenyl)-2-methoxy-3H-1, 4-benzodiazepine (IV) was obtained as a by-product. The latter (IV) was hydrolyzed in acid medium to give methyl (E)-[2-amino-5-chloro-α-(2-chlorophenyl) benzylidene] aminoacetate (syn-form) (XIX), which was converted into the 1, 4-benzodiazepine (I-1) by further acid treatment. Compound XIX isomerized to the corresponding anti-form (XXII) on heating. Most of the compounds prepared had an effect similar to that of diazepam in causing taming and anticonvulsant effects in mice.
描述了7-
氯-5-(2-
氯苯基)-2-(2-
二甲氨基乙基
硫)-3H-1, 4-苯二氮卓(III-1)及相关化合物的合成和药理特性。化合物III-1是通过将
硫内酰胺(II-1)与2-
二甲氨基乙基
氯在碱性
水甲醇条件下反应而制备的,同时获得了副产物7-
氯-5-(2-
氯苯基)-2-甲氧基-3H-1, 4-苯二氮卓(IV)。后者(IV)在酸性介质中
水解,生成甲基(E)-[2-
氨基-5-
氯-α-(2-
氯苯基)
苯乙烯]
氨基
乙酸酯(顺式)(XIX),该化合物经过进一步的酸处理转化为1, 4-苯二氮卓(I-1)。化合物XIX在加热时异构化为相应的反式(XXII)。大多数合成的化合物在小鼠中表现出类似于
地西泮的抚慰和抗惊厥效果。