申请人:The Upjohn Company
公开号:US04086230A1
公开(公告)日:1978-04-25
Compounds of the formula: ##STR1## wherein R.sub.1 is alkyl of 1 to 3 carbon atoms, inclusive; wherein R.sub.2 is hydrogen, methyl or ethyl; wherein R.sub.3 is hydrogen, fluoro, chloro, bromo, nitro and -CF.sub.3 ; and wherein Ar is phenyl, o-chlorophenyl, o-fluorophenyl, 2,6-difluorophenyl, and 2-pyridyl, are prepared by treating a hydrazino compound of the formula: ##STR2## with a carbonyl compound II: ##STR3## wherein R.sub.1 is defined as above, and R', R" are alkyl of 1 to 3 carbon atoms, inclusive, or the group ##STR4## is a cyclic acetal, such as ##STR5## to give a compound of formula III: ##STR6## wherein R.sub.1, R.sub.2, R.sub.3, R', R" and Ar are defined as above, and cyclizing compound III to give the compound IV above. Compounds III and IV, including the pharmacologically acceptable acid addition salt of these compounds, have sedative, anxiolytic and muscle-relaxing activity and can be used for the treatment of anxieties or muscle strains of mammals, including man.
公式为:##STR1## 其中R.sub.1是1至3个碳原子的烷基,包括;其中R.sub.2是氢,甲基或乙基;其中R.sub.3是氢,氟,氯,溴,硝基和-CF.sub.3;其中Ar是苯基,o-氯苯基,o-氟苯基,2,6-二氟苯基和2-吡啶基,通过将公式为:##STR2## 的腙化合物与一个羰基化合物II进行处理:##STR3## 其中R.sub.1如上所述定义,R',R"是1至3个碳原子的烷基,包括或 ##STR4## 是环状缩醛,例如 ##STR5## 得到公式III的化合物:##STR6## 其中R.sub.1,R.sub.2,R.sub.3,R',R"和Ar如上所述定义,并使化合物III环化以得到上述化合物IV。化合物III和IV,包括这些化合物的药理学可接受的酸盐,具有镇静,抗焦虑和肌肉松弛活性,并可用于治疗哺乳动物(包括人)的焦虑或肌肉紧张。