Tetrazolylcoumarin derivatives and antiallergic compositions con

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Parasitic organism or component thereof or substance...

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548253, A61K 3141, C07D25704

Patent

active

044069081

ABSTRACT:
Tetrazolylcoumarin derivatives of the general formula: ##STR1## wherein R is hydrogen atom, an alkyl group, an alkenyl group, an alkoxyalkyl group or phenyl group, n is an integer of 2 to 4, and the R--O--(CH.sub.2).sub.n --O-- group is substituted at any of the 5, 6, 7 and 8 positions of the coumarin ring, and the salts thereof. The compounds are useful as antiallergic agents for preventing and treating allergic diseases.

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