Hydrogen bond activated glycosylation under mild conditions
作者:Ke Xiao、Yongxin Hu、Yongyong Wan、XinXin Li、Qin Nie、Hao Yan、Liming Wang、Jinxi Liao、Deyong Liu、Yuanhong Tu、Jiansong Sun、Jeroen D. C. Codée、Qingju Zhang
DOI:10.1039/d1sc05772c
日期:——
Benefitting from the mild reaction conditions, this new hydrogen bond-mediated glycosylation system in combination with a hydrogen bond-mediated aglycon delivery system provides a reliable method for the synthesis of challenging phenolic glycosides. In addition, a chemoselective glycosylation procedure was developed using different imidate donors (trichloroacetimidates, N-phenyl trifluoroacetimidates, N-4-nitrophenyl
Synthetic investigation toward apigenin 5-O-glycoside camellianin B as well as the chemical structure revision
作者:Yang Hu、Yuan-Hong Tu、De-Yong Liu、Jin-Xi Liao、Jian-Song Sun
DOI:10.1039/c6ob00655h
日期:——
first totalsynthesis of the proposed structure of apigenin-5-O-glycoside camellianin B was achieved, wherein three approaches, one linear and two convergent, were established, through which the synthetic structures were firmly corroborated. Meanwhile, through the synthesis of anthentic camellianin B via commercially available camellianin A, the misassigned structures of camellianins A and B were revised