Patent ID: 8309559

Claim:
A substituted 2-amino-3-(sulfonyl)pyrazolo[1,5-a]pyrimidine compound of general formula 1, or pharmaceutically acceptable salt thereof, wherein: Ar is aryl selected from optionally substituted phenyl or optionally substituted 5-6-membered heteroaryl, containing as the heteroatom nitrogen or sulfur atom; R 1 and R 3 independently of each other represent C 1 -C 3 alkyl or phenyl; R 2 represents hydrogen or C 1 -C 3 alkyl; R 4 1 , R 4 2 independently of each other represent hydrogen, optionally substituted C 1 -C 3 alkyl or optionally substituted phenyl, or R 4 1 and R 4 2 together with the nitrogen atom they are attached to form optionally substituted heterocyclyl.