Total Syntheses of (+)-Valiolamine and (-)-1-<i>epi</i>-Valiolamine from Naturally Abundant (-)-Shikimic Acid
作者:Na Quan、Liang-Deng Nie、Rui-Heng Zhu、Xiao-Xin Shi、Wei Ding、Xia Lu
DOI:10.1002/ejoc.201300804
日期:2013.10
Total syntheses of (+)-valiolamine (1) and (–)-1-epi-valiolamine (2) from the naturally abundant (–)-shikimicacid are described. Ethyl 3-epi-5-O-methylsulfonyl-shikimate (3), as the key common intermediate, was first synthesized in five steps in 74 % overall yield, and then converted into the targets 1 and 2 in seven steps in 48 and 41 % overall yield, respectively.