USE OF 5-[2-ETHOXY -5-(4-METHYL-1-PIPERAZINILSULPHONIL)-PHENIL-1-METHYL-3-N-PROPYL-1,6-DIHYDRO-7H-PIRAZOLO-[4,3-D]PYRIMIDINE-7-ON FOR PRAPARING MEDICINE FOR THE TREATMENT OF MALE ERECTICE DISFUNCTION OF
The use of a compound of formula (I) wherein R1 is H； C1-C3 alkyl； C1-C3 perfluomalkyl； or C3-C5 cycloalkyl； R2 is H； optionally substituted C1-C6 alkyl； C1-C3 pefluoroalkyl； or C3-C6 cycloalkyl； R3 is optionally substituted C1-C6 alkyl； C1-C6 perfluoroalkyl； C3-C5 cycloalkyl； C3-C6 alkenyl； or C3-C6 alkynyl； R4 is optionally substituted C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkanoyl, (hydroxy)C2-C4 alkyl or (C2-C3 alkoxy)C1-C2 alkyl； CONR5R6； CO2R7； halo； NR5R6； NHSO2NR5R6； NHSO2R8； SO2NR9R10； or phenyl, pyridyl, pyrimidinyl, imidazolyl, oxazolyl, thiazolyl, thienyl or triazolyl any of which is optionally substituted with methyl； R5 and R6 are each independently H or C1-C4 alkyl, or together with the nitrogen atom to which they are attached form an optionally substituted pyrrolidinyl, piperidino, morpholino, 4-N(R11)-piperazinyl or imidazolyl group； R7 is H or C1-C4 alkyl； R8 is optionally substituted C1-C3 alkyl； R9 and R10 together with the nitrogen atom to which they are attached form an optionally su
