作者:Karl-Heinz Altmann、Tatjana Hofmann
DOI:10.1055/s-2008-1078406
日期:2008.6
The total synthesis of the natural product L-783277 (1) has been accomplished based on the convergent assembly of building blocks 9, 10, and 14. Key steps are the Suzuki coupling of olefin 11 and aromatic building block 14, the Mitsunobu-based macrolactonization of seco acid 16, and the allylic oxidation of the macrocyclic triol 2 with polymer-bound IBX. Only one of the two C6′-stereoisomers of 2 provided L-783277 (1) with high selectivity.
天然产物L-783277(1)的全合成基于模块9、10和14的汇聚式组装得以实现。关键步骤包括烯烃11与芳香模块14的Suzuki偶联、裂解酸16的基于Mitsunobu反应的大环内酯化,以及聚合物负载的IBX对大环三醇2的烯丙位氧化。仅有两种C6′立体异构体中的一种能够高选择性地提供L-783277(1)。