Mono- and disubstituted 1.4-benzopyrone-6-carboxylic acids and d

Details Mono- and disubstituted 1.4-benzopyrone-6-carboxylic acids and d Mono- and disubstituted 1.4-benzopyrone-6-carboxylic acids and d

1975-04-17

1976-11-23

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260515A, 260520E, 424283, C07D31102

Patent

active

039936694

ABSTRACT:
Novel C-2 mono- and C-2,3-disubstituted 1.4-benzopyrone-6-carboxylic acids and derivatives thereof which are useful as bronchiodilators. Methods for preparing these compounds are also disclosed.

REFERENCES:
patent: 3433805 (1969-03-01), Kramer et al.
patent: 3770802 (1973-11-01), Sianesi
patent: 3862143 (1975-01-01), Klutchko et al.
patent: 3862175 (1975-01-01), Fitzmaurice et al.
patent: 3872108 (1975-03-01), Ukyo et al.
patent: 3872130 (1975-03-01), Kreighbaum et al.
Shah et al., Current Sci. (India), 22, 306-307 (1953).
Save et al., J. Indian Chem. Soc., 49, 25 (1972).
Save et al., (I), J. Indian Chem. Soc., 48, 675 (1971).

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