4-溴乙基苯乙酸甲酯 、 2-哌嗪-1-基哌嗪 、 三乙胺 、 盐酸 在
ethanol-ether 作用下,
以
1,4-二氧六环 为溶剂,
以to provide 1.1 g of the title compound melting at 214° C.-216° C.的产率得到4-[[4-(2-Pyridyl)-1-piperazinyl]methyl]phenylacetic acid hydrochloride
This invention provides a benzylpiperazine derivative of formula (I) and a pharmacologically acceptable salt thereof ##STR1## wherein R.sub.1 represents a pyridine ring or a group of either formula (IV) or formula (V); R.sub.2 represents hydrogen or lower alkyl ##STR2## wherein R.sub.3 represents hydrogen, lower alkyl, a pyridine ring or a benzene ring which may be substituted by halogen; X represents halogen ##STR3## wherein R.sub.4 and R.sub.5 may be the same or different and each represents hydrogen, lower alkyl, lower alkoxy, halogen or carboxy.
Benzylpiperazine derivatives as antiallergic and anti-inflammatory agents
申请人:Senju Pharmaceutical Co., Ltd.
公开号:EP0753515A2
公开(公告)日:1997-01-15
This invention provides a benzylpiperazine derivative of formula (I) and a pharmacologically acceptable salt thereof
wherein R1 represents a pyridine ring or a group of either formula (IV) or formula (V); R2 represents hydrogen or lower alkyl.
wherein R3 represents hydrogen, lower alkyl, a pyridine ring or a benzene ring which may be substituted by halogen; X represents halogen.
wherein R4 and R5 may be the same or different and each represents hydrogen, lower alkyl, lower alkoxy, halogen or carboxy.