申请人:Gruppo Lepetit S.p.A.
公开号:US04461894A1
公开(公告)日:1984-07-24
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]咪唑和naphth [2,1-d]噁唑的化学式为##STR1##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是以下之一的基团##STR2##其中R.sub.3是烷基,环烷基或--(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R.sub.5和与其相邻的氮原子一起形成4-至7-成员饱和杂环,其中可能含有进一步的杂原子并且可以选择性地被取代,例如,苯基或取代苯基,R.sub.4是氢,烷基,环烷基或--(CH.sub.2).sub.n NR.sub.5 R.sub.6基团,只要R.sub.3和R.sub.4中的一个是--(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,或其药学上可接受的酸加成盐。它们是通过将相应的naphth [1,2-d]咪唑或naphth [2,1-d]噁唑与其中一个R.sub.3和R.sub.4或R.sub.7是--(CH.sub.2).sub.n X基团(其中X是反应性酯的残基)的适当胺在酸受体存在下进行接触制备的。这些新化合物可用作中枢神经系统抑制剂。