| abstract |
"XANTINE V PHOSPHODIESTERASE INHIBITORS". Xanthine V phosphodiesterase inhibitor having formula (I), wherein R 4 is a C 3-15 cycloalkyl group, with or without one or more substituents, C 3-15 cycloalkenyl group, with or without a or more substituents, or a 3 to 15 membered heterocycloalkyl group, with or without one or more substituents, useful for the treatment of male (erectile) and female sexual dysfunction and other physiological disorders. For example, a representative compound of the invention is formula (II). |