5-Chloro-3-nitro-pyrazolo[1,5-a]pyrimidine is used in the preparation of (S)-N-(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide, a tyrosine kinase (TRK) inhibitor for treating cancer.
參考文獻
Reynolds, M., et al.: PCT Int. Appl. (2017), WO 2017201241 A1 20171123