2-(4-Diphenylmethylpiperazinyl)-1-phenyl alkanol or their salts, a
申请人:Nippon Chemiphar Co., Ltd.
公开号:US04528194A1
公开(公告)日:1985-07-09
A piperazine derivative of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a lower alkyl group; R.sup.2 is a hydroxyl group, an aralkyloxy group, a lower alkoxy group containing 1-5 carbon atoms or a lower alkenyloxy group containing 3-5 carbon atoms; R.sup.3 is a hydrogen atom, or an aralkyloxy group, a lower alkoxy group containing 1-5 carbon atoms or a lower alkenyloxy group containing 3-5 carbon atoms; and R.sup.4 is a hydrogen atom or a lower alkoxy group containing 1-5 carbon atoms, provided that R.sup.2 is a group other than the lower alkoxy group containing 1-5 carbon atoms when both R.sup.3 and R.sup.4 are hydrogen atoms; or a pharmaceutically acceptable salt is effectively useful as a cerebral circulation-improving agent.
Pharmaceutical composition for protection of brain cells
申请人:NIPPON CHEMIPHAR CO., LTD.
公开号:EP0256890A2
公开(公告)日:1988-02-24
A pharmaceutical composition for protection of brain cells containing as an active component a piperazine derivative having the formula:
wherein R¹ is hydrogen or a lower alkyl group, R² is hydroxyl, an aralkyloxy group, a lower alkoxy group having 1-5 carbon atoms or a lower alkenyloxy group having 3-5 carbon atoms, R³ is hydrogen, an aralkyloxy group, a lower alkoxy group having 1-5 carbon atoms or a lower alkenyloxy group having 3-5 carbon atoms and R⁴ is hydrogen or a lower alkoxy group having 1-5 carbon atoms.