The compounds of formula (I)
wherein R1 to R8 and R11 have the meanings as given in the description, the salts thereof, the N-oxides of the compounds and the salts thereof, and the stereoisomers of the compounds, the salts, the N-oxides of the compounds and the N-oxides of the salts thereof are effective inhibitors of the type 5 phosphodiesterase.
公式(I)中的化合物,其中R1至R8和R11的含义如说明中所述,其盐,化合物的N-
氧化物及其盐,以及化合物,盐,化合物的N-
氧化物和其盐的立体异构体是5型
磷酸二酯酶的有效
抑制剂。