General Strategy for Stereoselective Synthesis of 1-Substituted <i>E</i><i>xo,</i><i>E</i><i>ndo</i>-2,6-Diaryl-3,7-dioxabicyclo[3.3.0]octanes: Total Synthesis of (±)-Gmelinol
作者:Manat Pohmakotr、Attapol Pinsa、Tipwan Mophuang、Patoomratana Tuchinda、Samran Prabpai、Palangpon Kongsaeree、Vichai Reutrakul
DOI:10.1021/jo0519110
日期:2006.1.1
A general strategy for stereoselective synthesis of 1-substituted exo,endo-2,6-diaryl-3,7-dioxabicyclo[3.3.0]octanes including (±)-gmelinol from (2,3-trans)-(4,5-cis)-α-aroylparaconic esters, which are readily obtained from the reaction of vicinal dianions derived from α-aroylsuccinic esters with aromatic aldehydes, is described. The synthetic sequence involves α-methylation or α-hydroxylation, reduction
从(2,3-反式)-(4,5)立体合成1-取代的exo,内含-2,6-二芳基-3,7-二氧杂双环[3.3.0]辛烷的一般策略描述了-顺式)-α-芳酰基对圆锥酸酯,其易于得自衍生自α-芳酰基琥珀酸酯的邻位二价阴离子与芳族醛。合成序列涉及α-甲基化或α-羟基化,还原,双内酯化和还原,然后形成呋喃呋喃。