Compounds of the formula (I):
and salts and pro-drugs thereof, wherein:
R1 is a hydrogen atom or a lower alkyl group:
R2 is a hydrogen atom or a lower alkyl group:
R3 is a hydrogen atom or a lower alkyl group;
R4 is a hydrogen atom or an alkyl group;
R5 is a lower alkyl or a substituted alkyl group;
or R4 and R5 are joined so that together with the nitrogen atom to which they are attached they form a 5-, 6- or 7-membered ring optionally containing an oxygen or sulphur atom:
R6 is an electron donating group;
R7 is an electron withdrawing group; and the NR4R5 and OR3 moieties are trans having antihypertensive activity, pharmaceutical compositions containing them and processes for their preparation.
式(I)化合物:
及其盐类和原药,其中
R1 是氢原子或低级烷基
R2 是氢原子或低级烷基
R3 是氢原子或低级烷基
R4 是氢原子或烷基
R5 是低级烷基或取代的烷基;
或 R4 和 R5 连接在一起,与所连接的氮原子一起形成一个 5、6 或 7 元环,环上可选含有一个氧原子或
硫原子:
R6 是电子捐赠基团;
R7 是取电子基团;而 NR4R5 和 OR3 分子是具有抗高血压活性的反式、含有它们的药物组合物及其制备工艺。