New Strategy for the Total Synthesis of Macrosphelides A and B Based on Ring-Closing Metathesis
作者:Yuji Matsuya、Takanori Kawaguchi、Hideo Nemoto
DOI:10.1021/ol0350689
日期:2003.8.1
[reaction: see text] A new total synthesis of macrosphelides A and B using ring-closing metathesis (RCM) as a macrocyclization step is described. The substrate of the RCM could be synthesized from readily available chiral materials, methyl (S)-(+)-3-hydroxybutyrate and methyl (S)-(-)-lactate, with a high efficiency. The RCM proceeded in the presence of Grubbs' Ru-complex, providing a new effective synthetic
[反应:见正文]描述了使用闭环复分解(RCM)作为大环化步骤的新的大环内酯A和B的全合成。RCM的底物可以由容易获得的手性材料,(S)-(+)-3-羟基丁酸甲酯和(S)-(-)-乳酸甲酯合成。RCM在Grubbs的Ru-络合物存在下进行,为这些天然产物提供了一条新的有效合成途径。