Study of Cascade Ring-Closing Metathesis Reactions en Route to an Advanced Intermediate of Taxol
作者:Aurélien Letort、De-Liang Long、Joëlle Prunet
DOI:10.1021/acs.joc.6b02264
日期:2016.12.16
A highly functionalized intermediate in the synthesis of Taxol has been synthesized, which features the tricyclic core and the required oxygen substituents at C1, C2, C7, C10, and C13. The key step, a ring-closing dienyne metathesis (RCDEYM) reaction, has been thoroughly optimized to favor the tricyclic product over the undesired bicyclic product resulting from diene metathesis.
已经合成了紫杉醇合成中的高度官能化的中间体,该中间体具有三环核以及在C1,C2,C7,C10和C13处需要的氧取代基。关键步骤是闭环二烯炔复分解(RCDEYM)反应,已彻底优化,以使三环产物优于二烯复分解产生的不希望的双环产物。