1-Piperidinecarboxylic acid, 3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)-, 1,1-dimethylethyl ester, (3S)-
1,1-Dimethylethyl (3S)-3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)-1-piperidinecarboxylate
(S)-tert-Butyl 3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)-1-piperidinecarboxylate