| abstract |
The present invention relates to a novel pyrazolopyrimidinethione compound of Formula 1, a pharmaceutically acceptable salt or hydrate thereof, and a method for preparing the same, wherein the pharmaceutical composition containing the same can be used for treating erectile dysfunction.n n n n n n n n n n Wheren n n R 1 and R 2 are each hydrogen, C 1 -C 6 alkyl or C 3 -C 6 cycloalkyl,n n n R 3 is substituted or unsubstituted C 1 -C 6 alkyl, C 3 -C 6 cycloalkyl or C 3 -C 6 alkenyl,n n n X is O or NR 4 ,n n n R 4 is hydrogen, substituted or unsubstituted C 1 -C 6 alkyl, C 3 -C 6 cycloalkyl or C 3 -C 6 alkenyl. |