Stereoselective total synthesis of furofuran lignans through dianion aldol condensation
作者:Jae-Chul Jung、Ju-Cheun Kim、Hyung-In Moon、Oee-Sook Park
DOI:10.1016/j.tetlet.2006.06.127
日期:2006.9
Highly stereoselective total synthesis of (+)-eudesmin, (+)-yangambin, (−)-eudesmin, and (−)-yangambin is described. This method is useful to generate the core skeleton of furofuran rings utilizing modification of Evans asymmetric aldolcondensation.
An efficient asymmetric synthesis of furofuran lignans: (+)-sesamin and (−)-sesamin
作者:Ju-Cheun Kim、Kwang-Hyun Kim、Jae-Chul Jung、Oee-Sook Park
DOI:10.1016/j.tetasy.2005.11.007
日期:2006.1
An efficient synthesis of (+)-sesamin 1a and (−)-sesamin 1b is described. The key reactions include highly stereoselective aldol condensation of piperonal 7 with the dianion of chiral oxazolidinone 8, followed by intramolecular ring cyclization of aldol product 11 in high yield.