75184-80-4Relevant academic research and scientific papers
Substituted 6,7-dihydroimidazo[1,2-al]purin-9 (4H)-ones
Temple Jr.,Yevich,Catt,Owens,Hanning,Covington,Seidehamel,Dungan
, p. 1188 - 1198 (2007/10/02)
The synthesis of a series of substituted 6,7-dihydroimidazo[1,2-a]purin-9(4H)-ones is described. Several members of the series exhibit enhanced antiallergic and bronchodilator activity and reduced side effects as compared to theophylline. Structure-activity relationships and metabolic considerations are discussed for the series. Analogues substituted with a 4-(4-chlorobenzyl) moiety, such as 33 and 40, show an optimal balance of antiallergic and bronchodilator activity and are of particular interest. Compound 33 is significantly more potent than theophylline against both metacholine- and antigen-induced bronchospasms, does not affect spontaneous motor activity, and shows minimal cardiovascular effects in the rat.
