2-amino-5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-3-carboxylic acid

Details 2-amino-5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-3-carboxylic acid 2-amino-5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-3-carboxylic acid

1986-01-28

1987-12-29

Jiles, Henry R.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

546 89, C07D491052

Patent

active

047161671

ABSTRACT:
The present invention relates to novel 2-amino-5-oxo-5H-[1]benzopyrano[2,3-b]pyridine-3-carboxylic acid derivatives useful for prophylaxis and therapy of allergic diseases such as allergic asthma, allergic dermatitis and hay fever, which have the following formula: ##STR1## wherein A is ##STR2## (R, R.sup.1 and R.sup.2 are independently hydrogen or lower alkyl and m is 0 or 1, with the proviso that when m is 1, R.sup.1 is hydrogen) or R--Co-- (R has the same meaning as defined above), or a physiologically acceptable salt thereof, and to a method for preparing the same.

REFERENCES:
patent: 4143042 (1979-03-01), Nohara et al.
patent: 4539326 (1985-09-01), Nohara et al.
CAS Online Structural Search.

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