Pyrano derivatives, a process for their preparation and antihypertensive compositions containing them
申请人:BEECHAM GROUP PLC
公开号:EP0033612A1
公开(公告)日:1981-08-12
Compounds of the formula (I):
wherein
R1 and R2 are independently selected from a hydrogen atom and a C1-3 alkyl group;
R3 is a hydrogen atom, a C1-3 alkyl or C2-4 acyl group;
R, is a hydrogen atom or C1-5 alkyl group;
R5 is a C1-5 alkyl group, a straight chain C1-3 alkyl group terminally substituted by a chlorine atom; 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 a hydrogen atom, or a C1-5 alkyl, phenyl, CF3 or XH group wherein X is an oxygen orsulphur atom, the dotted line represents a bond, and R, is not present; or R6 is an oxygen atom joined to the ring carbon atom by a double bond, the dotted line is not present, and R7 is hydrogen;
the NR4R5 and OR3 moieties are trans; and pharmaceutically acceptable salts thereof having antihypertensive activity, processes for their preparation and their use in compositions.
式 (I) 的化合物:
其中
R1 和 R2 分别独立地选自氢原子和 C1-3 烷基;
R3 是氢原子、C1-3 烷基或 C2-4 丙烯酸基;
R是氢原子或C1-5烷基
R5 是 C1-5 烷基、被氯原子末端取代的直链 C1-3 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 是氢原子,或 C1-5 烷基、苯基、CF3 或 XH 基团,其中 X 是氧原子或硫原子,虚线代表键,且 R 不存在;或 R6 是通过双键与环碳原子相连的氧原子,虚线不存在,且 R7 是氢;
NR4R5和OR3分子为反式;及其具有抗高血压活性的药学上可接受的盐类、其制备工艺和在组合物中的用途。