申请人:The Upjohn Company
公开号:US04075221A1
公开(公告)日:1978-02-21
An improved process for the production of 1-dialkyl-amino-ethyl-6-aryl-4H-s-triazolo[4,3-a][1,4]benzodiazepines of the formula II: ##STR1## wherein R.sub.1 is alkyl of 1 to 3 carbon atoms, inclusive; wherein R.sub.2 is hydrogen, methyl or phenyl; wherein the ring A is unsubstituted, or monosubstituted with fluoro, chloro, bromo, nitro, trifluoromethyl or methylthio; and wherein Ar is phenyl; o-chlorophenyl; o-fluorophenyl; 2,6-difluorophenyl or 2-pyridyl, is carried out by reacting a compound of the Formula I: ##STR2## wherein ring A, Ar and R.sub.2 are defined as above, with a dialkylmethyleneammonium salt in the presence of a reactive carboxylic acylating agent. The compounds of Formula II (R.sub.2 .dbd.H) are known compounds (Belgian Pat. No. 782,84g) which have sedative-tranquilizing as well as pronounced anti-depressant activity, suitable for the treatment of anxieties and depressions in mammals, including man.
一种改进的方法用于制备式II的1-二烷基氨基乙基-6-芳基-4H-s-三唑并[4,3-a][1,4]苯二氮平,其中R.sub.1是1到3个碳原子的烷基,包括;其中R.sub.2是氢,甲基或苯基;其中环A未取代,或单取代为氟,氯,溴,硝基,三氟甲基或甲硫基;而Ar是苯基;o-氯苯基;o-氟苯基;2,6-二氟苯基或2-吡啶基,通过在反应性羧酸酰化剂存在下与式I的化合物反应:其中环A,Ar和R.sub.2如上定义,与二烷基亚甲基铵盐反应。式II的化合物(R.sub.2.dbd.H)是已知化合物(比利时专利号782,84g),具有镇静安定以及明显的抗抑郁活性,适用于治疗哺乳动物,包括人类的焦虑和抑郁症。