A concise diastereoselective route to racemic samin, the general furofuran lignan precursor
作者:Seiichi Takano、Kiyohiro Samizu、Kunio Ogasawara
DOI:10.1039/c39930001032
日期:——
Exposure of the dihydro-1,3-dioxepine 5 to diisobutylaluminum hydride induces concurrent diastereoselective ring-contraction and reduction to lead to the trisubstituted tetrahydrofuran, oxidative cleavage of which gives (±)-samin1, the general furofuran lignan precursor.
Stereoselective total synthesis of (±)-samin and the dimethoxy analogue, the general furofuran lignan precursors
作者:Gourhari Maiti、Sankar Adhikari、Subhas Chandra Roy
DOI:10.1016/0040-4020(95)00450-m
日期:1995.7
A concise stereoselective synthesis of the general furofuran lignan precursors (+/-)-Samin 1a and its dimethoxy analogue 1b has been achieved through a radical annulation reaction in good overall yield.