| abstract |
Compounds having the formula (Ia) or (b), their salts or solvates (which have the variables defined herein) selectively inhibit phosphodiesterase V and have sexual function It may be useful for treating insufficiency and other physiological disorders, symptoms and diseases. Where q = 0, 1 or 2; R 1 , R a , R b , R c and R d are each independently H, alkyl group, aryl group, heteroaryl group, cycloalkyl group or hetero A cycloalkyl group, wherein each alkyl group of R 1 , R a , R b , R c, and R d is independently unsubstituted or selected from 1 to 5 separately R 3 moiety is substituted with, the R 3 moiety may be the same or different. |