申请人:Gruppo Lepetit S.p.A.
公开号:US04360674A1
公开(公告)日:1982-11-23
Naphth[1,2-d]imidazoles and naphth[2,1-d]oxazoles of formula ##STR1## wherein R and R.sub.1 are hydrogen, halogen, alkyl or alkoxy, R.sub.2 is hydrogen or halogen and A is one of the following moieties ##STR2## wherein R.sub.3 is alkyl, cycloalkyl, or a --(CH.sub.2).sub.n NR.sub.5 R.sub.6 group in which n is 1,2 or 3, R.sub.5 is hydrogen or alkyl, R.sub.6 is alkyl or R.sub.5 and R.sub.6 taken together with the adjacent nitrogen atom are a 4- to 7-membered saturated hetero ring which may contain a further hetero atom and optionally may be substituted, e.g., with phenyl or substituted phenyl, R.sub.4 is hydrogen, alkyl, cycloalkyl or a --(CH.sub.2).sub.n NR.sub.5 R.sub.6 group, provided that one of R.sub.3 and R.sub.4 is a --(CH.sub.2).sub.n --NR.sub.5 R.sub.6 group, and R.sub.7 is --(CH.sub.2).sub.n --NR.sub.5 R.sub.6, or a pharmaceutically-acceptable acid addition salt thereof. They are made by contacting a corresponding naphth[1,2-d]imidazole or a naphth[2,1-d]oxazole wherein one of R.sub.3 and R.sub.4 or R.sub.7 is a --(CH.sub.2).sub.n X group wherein X is the residue of a reactive ester with an appropriate amine of the formula HNR.sub.5 R.sub.6 in the presence of an acid acceptor. The new compounds are useful as CNS-depressant agents.
Naphth[1,2-d]imidazoles和naphth[2,1-d]oxazoles的化学式如下:
其中,R和R.sub.1是氢、卤素、烷基或烷氧基;R.sub.2是氢或卤素;A是以下基团之一:
其中,R.sub.3是烷基、环烷基,或者是一个--(CH.sub.2).sub.n NR.sub.5 R.sub.6基团,其中n为1、2或3,R.sub.5是氢或烷基,R.sub.6是烷基或者R.sub.5和R.sub.6与相邻的氮原子一起构成一个含有进一步杂原子的4-至7成员饱和杂环,可选择性地可以被取代,例如,苯基或取代苯基,R.sub.4是氢、烷基、环烷基或者一个--(CH.sub.2).sub.n NR.sub.5 R.sub.6基团,前提是R.sub.3和R.sub.4中的一个是一个--(CH.sub.2).sub.n --NR.sub.5 R.sub.6基团,R.sub.7是--(CH.sub.2).sub.n --NR.sub.5 R.sub.6,或其药用可接受的酸盐。这些化合物通过将相应的naphth[1,2-d]imidazole或naphth[2,1-d]oxazole与其中的R.sub.3和R.sub.4或R.sub.7之一是--(CH.sub.2).sub.n X基团的化合物接触,在酸受体的存在下,其中X是具有适当胺的反应酯的残基HNR.sub.5 R.sub.6的生成物。这些新化合物可用作中枢神经系统抑制剂。