2-Amino-5-bromo-2'-chlorobenzophenone (VII) afforded by a reaction with phthalimidoacetyl chloride the phthalimido derivative VIII which was transformed by hydrazinolysis to 7-bromo-5-(2-chlorophenyl)-1,3-dihydro-1,4-benzodiazepin-2-one (II). A reaction with phosphorus pentasulfide in pyridine gave the thiolactam IX which reacted with hydrazides of acetic and methylthioacetic acid in boiling 1-butanol and gave the title compounds V and VI. Compound V is very potent in pharmacological tests for anticonvulsant, central depressant and discoordinating activity in mice; compound VI is somewhat weaker.
2-
氨基-5-
溴-2'-
氯苯基酮(VII)通过与邻二
甲酰氯反应形成邻二甲
酰亚胺衍
生物(VIII),该衍
生物通过
肼解反应转化为7-
溴-5-(2-
氯苯基)-1,3-二氢-1,4-苯并二氮杂
环己酮(II)。在
吡啶中和五
硫化二
磷反应得到巯内酰胺(IX),它与
醋酸肼和甲
硫基
乙酸肼在沸腾的
1-丁醇中反应,形成了标题化合物V和VI。化合物V在小鼠的抗惊厥、中枢抑制和不协调活性药理试验中具有很强的效果,而化合物VI略弱。