The present invention provides an amino compound represented by Formula: ##STR1## wherein X is CH.sub.2 NH or CONH, Y is CH.sub.2 NH or CONH with the proviso that X and Y are not CONH at the same time; Z is CH.dbd.C(R.sup.4)R.sup.5, CH.sub.2 CH(R.sup.4)R.sup.5 or an alkoxycarbonyl group, R.sup.1 is a hydrogen atom; a lower alkyl group, a cycloalkyl group, a cycloalkyl-substituted alkyl group, an aralkyl group or an aryl group, each group of which is substituted or unsubstituted, R.sup.2 and R.sup.3 are each independently a lower alkyl group or an aralkyl group, each group of which is substituted or unsubstituted, and R.sup.4 and R.sup.5 are each independently a hydrogen atom; an alkyl group, an aralkyl group, an aryl group or a heteroaryl group, each group of which is substituted or unsubstituted, or a pharmaceutically acceptable salt thereof; a medicine comprising the amino compound of Formula (1) or a pharmaceutically acceptable salt; and an angiotensin IV receptor agonist containing the same as an effective component, which are useful, in particular, as a therapeutical drug (antagonist or agonist) for various diseases in which angiotensin IV participates, for example, acceleration of renal blood flow, cerebral vasodilation, inhibition of cell proliferation and hypermnesia.
本发明提供一种由公式表示的
氨基化合物:##
STR1##
其中,X是CH.sub.2 NH或CONH,Y是CH.sub.2 NH或CONH,但X和Y不能同时为CONH;Z是CH.dbd.C(R.sup.4)R.sup.5,CH.sub.2 CH(R.sup.4)R.sup.5或烷
氧羰基基团,R.sup.1是
氢原子;低
碳基,
环烷基,
环烷基取代的烷基,芳基烷基或芳基,每个基团都是取代或未取代的,R.sup.2和R.sup.3分别是低
碳基或芳基烷基,每个基团都是取代或未取代的,R.sup.4和R.sup.5分别是
氢原子,烷基,芳基烷基,芳基或杂环芳基,每个基团都是取代或未取代的,或其药学上可接受的盐;包括公式(1)的
氨基化合物或其药学上可接受的盐的药物;以及包含其作为有效成分的
血管紧张素IV受体激动剂,特别是作为
血管紧张素IV参与的各种疾病(例如加速肾脏血流,脑血管扩张,抑制细胞增殖和高记忆力)的治疗药物(
拮抗剂或激动剂)。