Synthesis of Phoracantholide I based on Stereospecific Fragmentation Reactions
作者:Shinji Nagumo、Hiroshi Suemune、Kiyoshi Sakai
DOI:10.1016/0040-4039(91)80090-s
日期:1991.9
Phoracantholide I was synthesized on the basis of silica gel-catalyzed fragmentation to the ring- enlarged lactones.
在硅胶催化的裂解为环扩大的内酯的基础上,合成了邻苯三甲酸酯I。
Synthesis of (R)-(−)-phoracantholide I based on stereocontrolled cleavage of internal acetal
作者:Shinji Nagumo、Hiroshi Suemune、Kiyoshi Sakai
DOI:10.1016/s0040-4020(01)89442-4
日期:——
prepared from 9 underwent silica-gel catalyzed, facile ring cleavage in a stereocontrolled fashion to afford the ring-enlarged 9-nonanolide derivatives (18). This methodology was applied for the synthesis of (R)-(−)-phoracantholide I. Examination using the Dreiding stereomodel provides a rationalized explanation for the stereocontrolledcleavage.