6-chloro-4-(3,6-dihydro-2H-pyran-4-yl)-1H-pyrazolo[3,4-d]pyrimidine 、
N-Boc-4-羟基哌啶 以to give tert-butyl 4-(6-chloro-4-(3,6-dihydro-2H-pyran-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carboxylate的产率得到tert-butyl 4-(6-chloro-4-(3,6-dihydro-2H-pyran-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carboxylate