Neurotropic and psychotropic agents. IV. Synthesis and pharmacological properties of 7-chloro-5-(2-chlorophenyl)-2-(2-dimethylaminoethylthio)-3H-1,4-benzodiazepine and related compounds.
作者:MASAAKI MATSUO、KIYOSHI TANIGUCHI、IKUO UEDA
DOI:10.1248/cpb.30.1141
日期:——
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。