Tandem Ring-Closing/Cross-Metathesis Approach for the Synthesis of Synargentolide B and Its Stereoisomers
作者:Gowravaram Sabitha、Kontham Shankaraiah、Jhillu S. Yadav
DOI:10.1002/ejoc.201300434
日期:2013.8
stereoisomers have been accomplished from L-(+)- and D-(–)-diethyl tartrates, D-ribose, and D-mannitol as chiral pool starting materials. The key step was a tandem ring-closing/cross-metathesis reaction in which lactone formation and fragment coupling were accomplished in one pot. The spectroscopic data of synthetic product 2c were in agreement with those reported for the natural product. Synargentolide
以 L-(+)- 和 D-(-)-酒石酸二乙酯、D-核糖和 D-甘露醇为手性池起始材料,已完成了合成内酯 B 及其三种立体异构体的立体选择性合成。关键步骤是串联闭环/交叉复分解反应,其中内酯形成和片段偶联在一锅中完成。合成产物 2c 的光谱数据与天然产物报道的数据一致。由 Rivett 等人分离的 Synargentolide B。和 Pereda-Miranda 等人分离的化合物。不是非对映异构体,而是相同的。