Disclosed is a process for preparing dihydro-2H-pyran derivatives of formula I: wherein R1 and R2 are defined herein. The process of the invention provides the compound of formula I in concise cascade reactions and in one pot. The compound of formulae I prepared by the process of the invention and its further transformed derivatives are useful for making pharmaceutical composition for the treatment of proliferative diseases.
本发明揭示了一种制备式I的二
氢-
2H-吡喃衍
生物的方法:其中R1和R2如本文所定义。该发明的方法通过简洁的级联反应和一锅法提供了式I的化合物。本发明方法制备的式I化合物及其进一步转化的衍
生物可用于制备治疗增殖性疾病的药物组合物。