Triazolopyrimidines

Details Triazolopyrimidines Triazolopyrimidines

1980-08-14

1983-09-13

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

2602433, 424251, C07D48712, C07D48714

Patent

active

044043805

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.

REFERENCES:
patent: 3859289 (1975-01-01), Hardtenann
patent: 3949088 (1976-04-01), Samuelsson et al.
patent: 4007189 (1977-02-01), Sato
patent: 4053474 (1977-10-01), Treuner et al.
patent: 4296117 (1981-10-01), Koppe et al.
patent: 4327113 (1982-04-01), Smith

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