4-苯基-1H-吡唑并[3,4-b]吡啶-3-基胺 、 (+)-Cis-tert-butyl 4-[(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-yl)carbonyl]-2-methylpiperidine-1-carboxylate 生成 Tert-butyl 2-methyl-4-(2-oxo-10-phenyl-1,2-dihydropyrido[2',3':3,4]pyrazolo[1,5-a]pyrimidin-4-yl)piperidine-1-carboxylate