申请人:Korea Research Institute of Chemical Technology
公开号:US05236935A1
公开(公告)日:1993-08-17
The present invention relates to novel benzopyran derivatives of formula (I) which have superior selectivity in the treatment of hypertension by lowering blood pressure with a relaxation activity on vascular smooth muscle. The present invention also relates to processes for preparing such compounds; and to a pharmaceutical compositions containing such compounds as an active ingredient. ##STR1## wherein: R.sub.1 is --CN, --NO.sub.2, --OCX.sub.1 X.sub.2 X.sub.3, --NH.sub.2, --NHSO.sub.2 R.sup.A, ##STR2## --SO.sub.2 R.sup.C or --SO.sub.2 NR.sup.C R.sup.D wherein X.sub.1, X.sub.2 and X.sub.3 are, each independently, a fluorine, chlorine or hydrogen atom; R.sup.A and R.sup.B are, each independently, an amino, C.sub.1-6 alkoxy, C.sub.1-6 alkyl group or an optionally substituted phenyl group; and R.sup.C and R.sup.D are a hydrogen atom, or a C.sub.1-6 alkyl group or an optionally substituted phenyl group with a halogen atom, or a straight or branched C.sub.1-3 alkyl group; R.sub.2 is ##STR3## wherein R.sup.E is a hydrogen atom, or a C.sub.1-6 alkyl, cyclopropyl, cyclopropylmethyl or benzyl group; R.sup.F is --COR.sup.A or --CSR.sup.A ; X is O, S or NR.sup.C, and n is an integer from 0 to 3, wherein R.sup.A and R.sup.C have the same meanings as defined above; R.sub.3 is a C.sub.1-4 straight or branched alkyl group; and R.sub.4 is ##STR4## wherein R.sup.G and R.sup.H are, each independently, a C.sub.-16 alkyl group or an optionally substituted phenyl group; A and B are, each independently, S or O; and Z is a C.sub.1-3 straight or branched alkyl group.
本发明涉及具有式(I)的新型苯并吡喃衍生物,其在治疗高血压方面具有优越的选择性,通过放松血管平滑肌降低血压。本发明还涉及制备这类化合物的方法;以及含有这类化合物作为活性成分的药物组合物。其中:R₁为--CN,--NO₂,--OCX₁X₂X₃,--NH₂,--NHSO₂Rᴬ,--SO₂Rᶜ或--SO₂NRᶜRᴰ,其中X₁,X₂和X₃分别为氟,氯或氢原子;Rᴬ和Rᴮ分别为氨基,C₁-₆烷氧基,C₁-₆烷基或可选择取代的苯基;Rᶜ和Rᴰ为氢原子,或C₁-₆烷基或可选择取代的苯基与卤原子,或直链或支链C₁-₃烷基;R₂为,其中Rᴱ为氢原子,或C₁-₆烷基,环丙基,环丙基甲基或苄基;Rᶠ为--CORᴬ或--CSRᴬ;X为O,S或NRᶜ,n为0到3的整数,其中Rᴬ和Rᶜ的含义如上定义;R₃为C₁-₄直链或支链烷基;R₄为,其中Rᴳ和Rᴴ分别为C₁-₁₆烷基或可选择取代的苯基;A和B分别为S或O;Z为C₁-₃直链或支链烷基。