| abstract |
The present invention relates to 1,5-dihydro-1,5-dioxo-N-1H-tetrazol-5-yl-4H-[1]benzopyrano[3,4-b]pyridine-2-carboxamides having the following structural formula: ##STR1## wherein R 1 is hydrogen, halogen, hydroxy, lower alkoxy, lower alkyl, or nitro and R 2 is hydrogen or lower alkyl and the pharmaceutically acceptable salts thereof. n These compounds and their pharmaceutically acceptable salts are useful in the management of allergic manifestations such as bronchial asthma, hay fever and the like. |