上游原料
4-((tert-butoxycarbonyl)amino)piperidine-4-carboxylic acid4-chloro-7H-pyrrolo[2,3-d]pyrimidine；6-Chloro-7-deazapurine；4-chloropyrrolo[2,3-d]pyrimidine；4-Chloro-1H-pyrrolo[2,3-d]pyrimidine4-((tert-butoxycarbonyl)amino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid(S)-3-amino-3-(4-chlorophenyl)propan-1-ol
