申请人:The Upjohn Company
公开号:US03947466A1
公开(公告)日:1976-03-30
A multi-step process for the preparation of 1-[(amino - or substituted amino)methyl]-6-phenyl-4H-s-triazolo-[4,3-a][1,4]benzodiazepines of the formula VI: ##SPC1## wherein R' is hydrogen or alkyl of 1 to 3 carbon atoms, inclusive, and wherein the rings A and B are unsubstituted or substituted by one or two substituents selected from the group consisting of chloro, fluoro, bromo, nitro, and trifluoromethyl, which comprises: treating a compound of the formula I: ##SPC2## wherein rings A and B are defined as above, with acetic anhydride and formic acid to obtain compound II: ##SPC3## wherein A and B rings have the significance as above, treating compound II with sufficient formaldehyde to produce compound III, the 3,5-bis(hydroxymethyl)derivative of II; treating III with phthalimide, triphenylphosphine and diethyl azodicarboxylate to give compound IV, the 3,5-bis(phthalimidomethyl) derivative of II; and treating IV with hydrazine hydrate to obtain a compound of formula V ##SPC4## wherein rings A and B are defined, as herein above. Compound V can then be alkylated in known manner to give those compounds of formula VIa which corresponds to formula VI when R' is desired to be alkyl. The compounds of formula VI have antidepressant and antianxiety effects in mammals and birds.
一种制备式VI的1-[(氨基或取代氨基)甲基]-6-苯基-4H-s-三唑-[4,3-a][1,4]苯并二氮平的多步骤过程:其中R'为氢或1至3个碳原子的烷基,A和B环未取代或取代为来自氯、氟、溴、硝基和三氟甲基的一或两种取代基,包括以下步骤:用乙酸酐和甲酸处理式I的化合物:其中环A和B如上所定义,以得到化合物II:其中A和B环具有上述意义,用足够的甲醛处理化合物II以产生化合物III,即II的3,5-双(羟甲基)衍生物;用邻苯二甲酰亚胺、三苯基膦和二乙基偶氮二甲酸酯处理III以给出化合物IV,即II的3,5-双(邻苯二甲酰亚甲基)衍生物;用水合肼处理IV以获得式V的化合物:其中环A和B如上所定义。然后,化合物V可以用已知方法烷基化,以给出当需要烷基时与式VI相对应的化合物VIa。式VI的化合物具有哺乳动物和鸟类的抗抑郁和抗焦虑作用。