The Carbohydrate−Sesquiterpene Interface. Directed Synthetic Routes to Both (+)- and (−)-Fomannosin from <scp>d</scp>-Glucose
作者:Leo A. Paquette、Xiaowen Peng、Jiong Yang、Ho-Jung Kang
DOI:10.1021/jo8004233
日期:2008.6.1
An enantiodivergent strategy for the total chemical synthesis of both naturallyoccurring (+)-fomannosin (1) and its (−)-antipode (ent-1) from α-d-glucose has been developed and successfully implemented. The key steps in the overall pathway include the following: (i) application of the zirconocene-mediated ring contraction of vinyl furanosides for the construction of highly substituted cyclobutanols;