Novel chromone derivatives

Details Novel chromone derivatives Novel chromone derivatives

1976-03-24

1978-04-18

Waddell, Frederick E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424269, A61K 3141, C07D25704

Patent

active

040851168

ABSTRACT:
The present invention relates to novel chromone derivatives having effective antiallergic action with low toxicity, which are shown by the following formula (I) ##STR1## wherein R is hydrogen or lower alkyl and A is ##STR2## (R' is hydrogen or lower alkyl) or ##STR3## and their physiologically acceptable salts.

REFERENCES:
patent: 3896114 (1975-07-01), Nohara

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