申请人:Sandoz, Inc.
公开号:US04315860A1
公开(公告)日:1982-02-16
Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, alkyl of 1 to 6 carbon atoms or amino, R.sub.2 is hydrogen or alkyl of 1 to 6 carbon atoms, with the provisos that (1) at least one of R.sub.1 and R.sub.2 is not a tertiary alkyl group and (2) R.sub.2 is hydrogen when R.sub.1 is amino, or R.sub.1 and R.sub.2 taken together and with the nitrogen atom to which they are joined are pyrrolidino, piperidino or N'-2-hydroxyethylpiperazino, each X' is independently alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms or halo or two X's on adjacent carbon atoms together are methylenedioxy, and n is 0, 1, 2 or 3, and the pharmaceutically acceptable acid addition salts thereof, are useful as anti-obesity and anti-diabetic agents. The compounds wherein R.sub.1 is alkyl and R.sub.2 is hydrogen are synthesized by a two-step synthesis from 2-alkyl-5-arylisoxazolium salts and ethylenediamine. The compounds wherein R.sub.1 and R.sub.2 are hydrogen are synthesized by cleaving the t-butyl group from the corresponding compounds wherein R.sub.1 is t-butyl and R.sub.2 is hydrogen. The compounds wherein R.sub.1 is amino are synthesized from the corresponding compounds wherein R.sub.1 is hydrogen or alkyl. All of the compounds are synthesized by reacting ammonia, a suitable amine or hydrazine with a compound of the formula ##STR2## wherein R' is primary or secondary alkyl of 1 to 4 carbon atoms.
化合物的公式为##STR1##其中R.sub.1为氢、1至6个碳原子的烷基或氨基,R.sub.2为氢或1至6个碳原子的烷基,但有以下条件:(1) R.sub.1和R.sub.2中至少有一个不是三级烷基,(2) 当R.sub.1为氨基时,R.sub.2为氢,或者当将R.sub.1和R.sub.2连同它们结合的氮原子一起取为吡咯烷基、哌啶烷基或N'-2-羟乙基哌嗪烷基时,R.sub.2为氢,每个X'独立地为1至4个碳原子的烷基、1至4个碳原子的烷氧基或卤素,或者相邻碳原子上的两个X'共同为亚甲二氧基,n为0、1、2或3,以及其药学上可接受的酸加盐,可用作抗肥胖和抗糖尿病药物。其中R.sub.1为烷基且R.sub.2为氢的化合物通过从2-烷基-5-芳基异噁唑盐和乙二胺的两步合成来合成。其中R.sub.1和R.sub.2均为氢的化合物通过从相应的R.sub.1为叔丁基且R.sub.2为氢的化合物中裂解叔丁基基团来合成。其中R.sub.1为氨基的化合物通过从相应的R.sub.1为氢或烷基的化合物中合成。所有的化合物都通过将氨、适当的胺或肼与公式##STR2##其中R'为1至4个碳原子的一级或二级烷基反应而合成。