Novel quinazoline and cinnoline derivatives having the formula ##STR1## (wherein one of A and B is CH and the other one of A and B is N; X.sub.1 is halogen or CF.sub.3 and X.sub.3 is one of the groups II, III, IV or V ##STR2## where Q is lower alkylene; R.sub.1 is hydrogen or lower alkyl; R.sub.2 and R.sub.3 are independently lower alkyl or R.sub.2 and R.sub.3 are a divalent radical such that HNR.sub.2 R.sub.3 is a secondary cyclic amine with 5 to 7 ring atoms; R.sub.4 is lower alkyl; n is 0 or 1; the rings shown in formulae III and IV are piperidine or pyrrolidine optionally substituted by lower alkyl; and the ring shown in formula V is piperazine optionally substituted by lower alkyl) and their pharmaceutically acceptable salts are useful as pharmaceuticals particularly as anti-hypertensives. Novel intermediates are also described including the corresponding sulphonic acids of formula I (where A, B and X.sub.1 are defined above and X.sub.3 is OH).
具有以下结构式的新奎奈唑和
咪唑衍
生物(其中A和B中的一个是CH,另一个是N;X1是卤素或
CF3,X3是II、III、IV或V中的一个基团,其中Q是较低的烷基烯;R1是氢或较低的烷基;R2和R3是独立的较低烷基,或者R2和R3是一种双价基团,使得HNR2R3是具有5至7个环原子的二级环胺;R4是较低的烷基;n为0或1;在III和IV式中显示的环是
哌啶或
吡咯啉,可以选择地被较低的烷基取代;在V式中显示的环是
哌嗪,可以选择地被较低的烷基取代),以及它们的药学上可接受的盐在药物学中特别作为降压药物是有用的。还描述了新的中间体,包括式I的相应
磺酸(其中A、B和X1如上所定义,X3是OH)。