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.
化学式为##STR1##的化合物,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,条件是(1)R.sub.1和R.sub.2中至少一个不是三级烷基,(2)当R.sub.1为
氨基时,R.sub.2为氢,或者当R.sub.1和R.sub.2与它们连接的氮原子一起取代为
吡咯烷基、
哌啶烷基或N'-2-羟乙基
哌嗪基时,R.sub.2为氢,每个X'都是独立的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'一起为亚甲二氧基,n为0、1、2或3,以及其药物可接受的酸盐,可用作抗肥胖和抗糖尿病剂。其中R.sub.1为烷基且R.sub.2为氢的化合物是由2-烷基-5-芳基
异噁唑盐和
乙二胺的两步合成得到的。其中R.sub.1和R.sub.2都是氢的化合物是通过从相应的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合成的。其中R.sub.1为
氨基的化合物是从相应的R.sub.1为氢或烷基的化合物中合成的。所有化合物都是通过将
氨、适当的胺或
肼与化合物##STR2##反应而合成的,其中R'为1至4个碳原子的一级或二级烷基。