Substituted indolylpropyl-piperazine derivatives as 5-HT.sub.1D .alpha.
申请人:Merck Sharp & Dohme Limited
公开号:US05981529A1
公开(公告)日:1999-11-09
A class of 1-[3-(1H-indol-3-yl)propyl]-4-(2-phenylethyl)piperazine derivatives, substituted at the 5-position of the indole nucleus by a five-membered heteroaromatic moiety, on one or other of the ethylene carbon atoms of the phenethyl moiety by halogen, trifluoromethyl, alkyl, hydroxyalkyl or alkoxyalkyl, and optionally on the phenyl ring of the phenethyl moiety by halogen, trifluoromethyl, alkoxy or an oxazolidinone group and optionally by one or two further substituents, are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D .alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D .alpha. receptor subtype relative to the 5-HT.sub.1D .beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.
一类1-[3-(1H-吲哚-3-基)丙基]-4-(2-苯乙基)哌嗪衍生物,通过在吲哚核的5位被一个五元杂环芳基取代,在苯乙基的乙烯碳原子上通过卤素、三氟甲基、烷基、羟基烷基或烷氧基取代,以及在苯乙基的苯环上通过卤素、三氟甲基、烷氧基或氧杂环丙酮基,并可选择性地通过一个或两个进一步的取代基,它们是5-HT.sub.1-样受体的选择性激动剂,是人类5-HT.sub.1D .alpha.受体亚型的有效激动剂,同时相对于5-HT.sub.1D .beta.亚型具有至少10倍的选择性亲和力;因此,在治疗和/或预防临床病症,特别是偏头痛及相关疾病方面,对于需要5-HT.sub.1D受体亚型选择性激动剂的情况,它们比非亚型选择性的5-HT.sub.1D受体激动剂引起的副作用更少,尤其是不良心血管事件。