Novel thienobenzopyran and thiopyranobenzopyran esters represented by the formula ##SPC1## Wherein n is 0 to 3 and m is 0 to 3 and m + n = 2 or 3, R.sub.1 is lower alkyl, R.sub.2 is alkyl or cycloalkyl-lower alkyl, R.sub.4 is hydrogen or lower alkyl, R.sub.5 is hydrogen or lower alkyl, and R.sub.3 is ##EQU1## wherein Y is a straight or branched chain C.sub.1 to C.sub.8 alkylene, R.sub.6 is hydrogen or a lower alkyl, a is an integer from 1 to 4, b is an integer from 1 to 4, X is CH.sub.2, O, S or NR.sub.7 wherein R.sub.7 is hydrogen or lower alkyl, with the limitation that when X is O, S or NR.sub.7, a and b each must be 2; and the acid addition salts thereof.
该式表示的是新型
噻唑苯并
吡喃和
噻唑苯并
吡喃酯,其中n为0至3,m为0至3,且m+n=2或3,R1为低碳基,R2为烷基或环烷基-低碳基,R4为氢或低碳基,R5为氢或低碳基,R3为##EQU1##其中Y是直链或支链C1至C8烷基,R6为氢或低碳基,a为1至4的整数,b为1至4的整数,X为
CH2、O、S或NR7,其中R7为氢或低碳基,但当X为O、S或NR7时,a和b必须均为2;以及其酸加成盐。