The present invention relates to compounds having the general formula: ##STR1## in which R.sub.1 and R.sub.2, which may be the same or different, represent each a hydrogen atom, a C.sub.1 -C.sub.6 alkyl radical or a C.sub.3 -C.sub.6 cycloalkyl radical; R.sub.3 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl radical; R.sub.4 and R.sub.5, which may be the same or different, represent a hydrogen atom a C.sub.1 -C.sub.6 alkyl radical or, together with the nitrogen atom to which they are attached, form a pyrrolidino, piperidino, morpholino or piperazinyl radical optionally substituted with a C.sub.1 -C.sub.4 alkyl radical, or a 4-hydroxypiperidino radical, and their pharmaceutically acceptable acid addition salts. Said compounds are therapeutically useful for the control of the cardio-vascular system and of the blood pressure.
本发明涉及具有一般式的化合物:##STR1##其中R.sub.1和R.sub.2可以相同也可以不同,分别代表氢原子,C.sub.1-C.sub.6烷基基团或C.sub.3-C.sub.6环烷基基团;R.sub.3代表氢原子或C.sub.1-C.sub.4烷基基团;R.sub.4和R.sub.5可以相同也可以不同,分别代表氢原子,C.sub.1-C.sub.6烷基基团,或与它们所连接的氮原子一起形成一个
吡咯啉基、
哌啶基、
吗啡啉基或
哌嗪基,可选地被C.sub.1-C.sub.4烷基基团取代,或
4-羟基
哌嗪基;以及它们的药学上可接受的酸盐。这些化合物在控制心血管系统和血压方面具有治疗用途。