The present invention relates to a phenylpiperazine derivative represented by the general formula: ##STR1## wherein R.sub.1 stands for a lower alkyl group; R.sub.2 stands for a group represented by the general formula: ##STR2## (wherein R.sub.3, R.sub.4 and R.sub.5 each stand for a hydrogen atom or a lower alkyl group and Y stands for CH or N); and n stands for an integer of 1 to 6, and pharmaceutically acceptable acid addition salts thereof, which exhibit an .alpha..sub.1 -blocking activity and therefore are expected to be useful as a hypotensive drug.
本发明涉及一种苯基
哌嗪衍
生物,其通式表示为:##STR1##其中,R.sub.1代表较低的烷基;R.sub.2代表由通式表示的基团:##STR2##(其中,R.sub.3、R.sub.4和R.sub.5各自代表氢原子或较低的烷基,Y代表CH或N);n代表1至6的整数,以及其药学上可接受的酸加盐,其表现出α1-阻滞活性,因此被期望用作降压药。