The invention provides a method for preparing a
sorafenib-
cholic acid coupling prodrug based on step-by-step
coupling of
sorafenib modular
assembly, which comprises the following steps of: firstly synthesizing a complete
sorafenib part by taking tert-butyl-(iodo-oxy)
dimethylsilane as a
linker, and after a sorafenib module is assembled, preparing the sorafenib-
cholic acid coupling prodrug through step-by-step coupling, thereby obtaining the sorafenib-
cholic acid coupling
prodrug. And then coupling with cholic acid compounds step by step through deprotection. According to the method, the reaction steps are greatly reduced, the reaction can be carried out under the
room temperature condition, the safety of the synthesis process is improved, especially depending on the unique
connexon design and through the specific binding mechanism of the
connexon and the sorafenib module, on one hand, the yield of each
reaction step is remarkably improved, and on the other hand, the yield of the sorafenib module is greatly increased; the preparation efficiency of a target product is greatly improved; and on the other hand,
side reaction is blocked from the reaction source, so that the purification difficulty of the product is reduced, and the
controllability of the whole synthesis process is enhanced.