申请人:Korea Research Institute of Chemical Technology
公开号:US05300511A1
公开(公告)日:1994-04-05
The present invention relates to novel benzopyran derivatives of formula(I) which have exellent effectiveness in the treatment of asthma as well as hypertension. ##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, F, Cl or H, except for that X.sub.1, X.sub.2 and X.sub.3 may not be hydrogen atom simulaneously; R.sup.A and R.sup.B are, each independently, 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; and R.sup.C and R.sup.D are, each independently, 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 a C.sub.1-4 straight or branched alkyl group; R.sub.3 is a C.sub.1-4 straight or branched alkyl group, ##STR3## wherein R.sup.G and R.sup.H are, each independently, a C.sub.1-6 alkyl group or optionally substituted phenyl group with a halogen atom, or a straight or branched C.sub.1-3 alkyl group, A and B are, each independently, S or O; and Z is a C.sub.1-3 straight or branched alkyl group; X is N or N.fwdarw.O.
本发明涉及一种新的苯并吡喃衍生物(I式),其在哮喘和高血压的治疗中具有出色的疗效。其中,R1为--CN,--NO2,--OCX1X2X3,--NH2,--NHSO2RA,--SO2RC或--SO2NRCCRD,其中X1、X2和X3分别为F、Cl或H,除非X1、X2和X3不能同时为氢原子;RA和RB分别为氢原子,或C1-6烷基或可选择取代的含有卤素原子的苯基,或直链或支链的C1-3烷基;RC和RD分别为氢原子或C1-6烷基或可选择取代的含有卤素原子的苯基,或直链或支链的C1-3烷基;R2为C1-4直链或支链烷基;R3为C1-4直链或支链烷基,其中Rg和Rh分别为C1-6烷基或可选择取代的含有卤素原子的苯基,或直链或支链的C1-3烷基,A和B分别为S或O;Z为C1-3直链或支链烷基;X为N或N→O。