6-Propoxy-1-tetrahydro-2H-pyran-2-yl-1H-pyrazolo[3,4-d]pyrimidin-4-amine 6-Propoxy-1-tetrahydro-2H-pyran-2-yl-1H-pyrazolo[3,4-d]pyrimidin-4-ylamine AIDS-135093 AIDS135093 NSC634377