申请人:The Boots Company PLC
公开号:US05627191A1
公开(公告)日:1997-05-06
The invention provides compounds of formula I ##STR1## and pharmaceutically acceptable salts thereof; wherein R.sub.50 is hydrogen or C.sub.1-4 alkyl, A.sub.51 is oxygen, sulphur or a group of the formula --NR.sub.52 -- wherein R.sub.52 is hydrogen or C.sub.1-4 alkyl; A.sub.50 comprises i) a mono or bicyclic aromatic ring optionally containing one or more nitrogen, oxygen or sulphur atoms, ii) a cycloalkendiyl group, or iii) an acyclic bridging group having a chain of one, two or three atoms between the cyclobutenedione group and X.sub.50, said chain being a chain of one or two carbon atoms or a chain of one carbon atom and one or more nitrogen, oxygen or sulphur atoms or iv) a bond; X.sub.50 is either a bond or a spacer group providing a chain between A.sub.50 and B.sub.50 of one or two atoms length; B.sub.50 is a mono or bicyclic aromatic-ring optionally containing one or more nitrogen, oxygen or sulphur atoms; r is an integer from 1 to 6; and Het is a ring system optionally containing one or more nitrogen, oxygen or sulphur atoms or is a phosphonate, phosphinate or amine derivative (wherein each of A.sub.50, X.sub.50, B.sub.50 and Her are optionally substituted). The compounds have angiotensin II antagonist activity and are useful in the treatment of cardiovascular disorders such as hypertension.
该发明提供了化合物的结构式I ##STR1##及其药用盐;其中R.sub.50为氢或C.sub.1-4烷基,A.sub.51为氧、硫或具有结构式--NR.sub.52 --的基团,其中R.sub.52为氢或C.sub.1-4烷基;A.sub.50包括i)一个含有一个或多个氮、氧或硫原子的单环或双环芳香环,ii)一个环戊二烯基团,或iii)一个具有一个、两个或三个原子链的无环桥连基团,该链位于环丁二酮基团和X.sub.50之间,该链为一个或两个碳原子的链或一个碳原子和一个或多个氮、氧或硫原子的链,或iv)一个键;X.sub.50为键或提供A.sub.50和B.sub.50之间一条长为一个或两个原子的链的间隔基团;B.sub.50为一个含有一个或多个氮、氧或硫原子的单环或双环芳香环;r为1到6的整数;Het为一个含有一个或多个氮、氧或硫原子的环系统,或者是磷酸酯、磷酸酯或胺衍生物(其中A.sub.50、X.sub.50、B.sub.50和Her中的每一个均可选择性地被取代)。这些化合物具有抗血管紧张素II活性,并可用于治疗高血压等心血管疾病。