Heterocyclic esters of benzopyranopyridines

Details Heterocyclic esters of benzopyranopyridines Heterocyclic esters of benzopyranopyridines

1972-12-04

1976-11-09

Todd, G. Thomas

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

260240R, 260240D, 260240K, 260243B, 2602472B, 260268TR, 26029358, 260295T, 424248, 424250, 424263, 424267, C07D49104

Patent

active

039911942

ABSTRACT:
Novel heterocyclic esters of benzopyranopyridines represented by the formula ##SPC1##
Wherein R.sub.1 is hydrogen, lower alkyl, lower alkanoyl, cycloalkyl-lower alkyl, cycloalkyl-lower alkanoyl, lower alkenyl, lower alkynyl, halo-loweralkenyl, phenyl-lower alkyl, phenyl-lower alkenyl or phenyl-lower alkynyl; R.sub.2 is lower alkyl; R.sub.3 is an alkyl having one to twenty carbon atoms or a cycloalkyl-lower alkyl, Y is a straight or branched chain alkylene having one to eight carbon atoms, and R.sub.4 is a group of the formula ##EQU1## a is an integer from 1 to 4, b is an integer from 1 to 4 and X is CH.sub.2, O, S or N--R.sub.5 with R.sub.5 being hydrogen or lower alkyl, with the limitation that when X is O, S or N--R.sub.5, a and b each must be 2 and R.sub.6 is hydrogen or a lower alkyl group bonded to a carbon in the ring; and the acid addition salts thereof.

REFERENCES:
patent: 3452046 (1969-06-01), Yale et al.
patent: 3509163 (1970-04-01), Brandstrom et al.
patent: 3514464 (1970-05-01), Pars et al.
patent: 3522260 (1970-07-01), Shulgin
patent: 3542789 (1970-11-01), Satzinger
patent: 3656906 (1972-04-01), Bullock
patent: 3728360 (1973-04-01), Pars et al.
patent: 3787424 (1974-01-01), Pars et al.
Buzas et al., Compt. Rend. 256, 1804-1806, (1963).

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