Bioinspired Total Synthesis of (−)-Vescalin: A Nonahydroxytriphenoylated<i>C</i>-Glucosidic Ellagitannin
作者:Antoine Richieu、Philippe A. Peixoto、Laurent Pouységu、Denis Deffieux、Stéphane Quideau
DOI:10.1002/anie.201707613
日期:2017.10.23
first total synthesis of the 2,3,5‐O‐(S,R)‐nonahydroxytriphenoylated (NHTP) C‐glucosidic ellagitannin (−)‐vescalin was accomplished through a series of transformations mimicking the sequence of events leading to its biogenesis. The key steps of this synthesis encompass a Wittig‐mediated ring opening of a glucopyranosic hemiacetal, a C‐glucosidation event through a phenolic aldol‐typereaction, and a W