Heterocyclic esters of alkylphenyl benzopyrans

Details Heterocyclic esters of alkylphenyl benzopyrans Heterocyclic esters of alkylphenyl benzopyrans

1974-02-13

1977-09-20

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

260239A, 26034344, 2602472R, 260268PC, 26029358, 26029367, 26029388, 26032643, 2603453, 260553A, 260592, 260613R, 260621F, 42424855, 424267, 424274, C07D29500

Patent

active

040496538

ABSTRACT:
Heterocyclic esters of benzopyrans represented by the formula ##STR1## wherein n is 1 or 2; each R and R.sub.1 are the same or different members of the group consisting of hydrogen or loweralkyl; R.sub.2 is loweralkyl; R.sub.3 is ##STR2## WITH Y' being a straight or branched chain alkylene group having from one to eight carbon atoms, 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 with R.sub.7 being hydrogen or loweralkyl, with the limitation that when X is O, S, or NR.sub.7, a and b each must be 2; R.sub.8 is hydrogen or loweralkyl; Y is a straight or branched chain alkylene group having from one to ten carbon atoms; and each R.sub.4 and R.sub.5 and R.sub.6 are the same or different members of the group consisting of hydrogen, halo, trifluoromethyl or loweralkyl; and the pharmaceutically acceptable salts thereof.

REFERENCES:
patent: B447000 (1976-02-01), Hauck et al.
patent: 3880885 (1975-04-01), Houlihan et al.

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