abstract |
Compound of general formula I: n n n wherein R 1 , R 2 , R 3 , R 4 , X, Y and R 5 have the meanings given herein which are useful in the curative and prophylactic treatment of a medical condition for which inhibition of a cyclic guanosine 3′,5′-monophosphate phosphodiesterase (e.g. cGMP PDE5) is desired. |