申请人:Abbott Laboratories
公开号:US03947462A1
公开(公告)日:1976-03-30
2,4,7-Substituted 5-hydroxy benzopyrans and dihydrobenzopyrans and their esters represented by the formulae ##SPC1## Wherein each R.sub.1 is loweralkyl, and R.sub.2 is hydrogen, loweralkanoyl or ##SPC2## With Y being a straight or branched chain alkylene group having from 1-8 carbon atoms; a is an integer from 1-4; b is an integer from 1-4; X is CH.sub.2, O, S, or NR.sub.5 with R.sub.5 being hydrogen or loweralkyl, with the limitation that when X is O, S, or NR.sub.5, the sum of a and b is 3 or 4 and R.sub.4 is hydrogen or loweralkyl; and R.sub.3 is ##SPC3## With Y' being a straight or branched chain alkylene group having from 1-10 carbon atoms; and each R.sub.7, R.sub.8 and R.sub.9 are the same or different members of the group consisting of hydrogen, halo, trifluoromethyl or loweralkyl and the pharmaceutically acceptable salts thereof.
2,4,7-取代的5-羟基苯并吡喃和二氢苯并吡喃及其酯的化学式如下所示:其中每个R.sub.1是较低的烷基,R.sub.2是氢,较低的烷酰基或##SPC2##,Y是具有1-8个碳原子的直链或支链烷基基团;a是1-4之间的整数;b是1-4之间的整数;X是CH.sub.2,O,S或NR.sub.5,其中R.sub.5是氢或较低的烷基,限制条件是当X为O,S或NR.sub.5时,a和b的总和为3或4,R.sub.4是氢或较低的烷基;R.sub.3是##SPC3##,其中Y'是具有1-10个碳原子的直链或支链烷基基团;每个R.sub.7,R.sub.8和R.sub.9是氢,卤素,三氟甲基或较低的烷基的相同或不同成员,以及其药用可接受的盐。