muconin, was synthesized through a coupling reaction of a THF–THP segment and a terminal butenolide. The key reactions include successive ether-ring formation reaction under acidic and basic conditions or one-pot double cyclization promoted by TBAF and stereoselective reduction of acyclic ketones adjacent to the 2,6-cis THP with Zn(BH4)2.
通过THF-THP链段与末端
丁烯内酯的偶联反应合成了抗肿瘤产
乙酸原素粘蛋白。关键反应包括在酸性和碱性条件下连续的醚环形成反应或由TBAF促进的一锅双环化和与Zn(BH 4)2相邻的2,6-顺式THP的无环酮的立体选择性还原。