Antiallergic methods using diazaheterocyclopurines

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...

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424253, A61K 31505, A61K 3152

Patent

active

043661564

ABSTRACT:
Imidazopyrimidinones and other diazaheterocyclopyrimidinones having an additional fused imidazole or triazole ring have utility as bronchodilators, mediator release inhibitors, phosphodiesterase inhibitors, and peripheral vasodilators. They are orally active and useful in the prophylaxis and treatment of asthma. A preferred compound is 4-[(4-chlorophenyl)methyl]-6,7-dihydro-3H-imidazo[1,2-a]purin-9(4H)-one.

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