[(4-Oxo-4H-1-benzopyran-3-yl)oxy] acetic acids and derivatives

Details [(4-Oxo-4H-1-benzopyran-3-yl)oxy] acetic acids and derivatives [(4-Oxo-4H-1-benzopyran-3-yl)oxy] acetic acids and derivatives

1977-10-13

1978-11-28

Chan, Nicky

Drug, bio-affecting and body treating compositions

Nonspecific immunoeffector, per se ; or nonspecific...

Lipid or oil

2603452, 2603455, 260308D, 424269, A61K 3135, C07D31176, C07D25704, A61K 3141

Patent

active

041276698

ABSTRACT:
Compounds of formula I: ##STR1## wherein Y is hydrogen, lower alkyl, halogen or lower alkoxy; X is carboxy, alkoxycarbonyl, carboxamide, cyano or tetrazolo, and their non-toxic, pharmaceutically acceptable salts are disclosed. These compounds are useful in the prevention of allergic and asthmatic reactions.

REFERENCES:
patent: 3849446 (1974-11-01), Strandtmann et al.

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