Regioselective and 1,2-<i>cis</i>-α-Stereoselective Glycosylation Utilizing Glycosyl-Acceptor-Derived Boronic Ester Catalyst
作者:Akira Nakagawa、Masamichi Tanaka、Shun Hanamura、Daisuke Takahashi、Kazunobu Toshima
DOI:10.1002/anie.201504182
日期:2015.9.7
Regioselective and 1,2‐cis‐α‐stereoselective glycosylations using 1α,2α‐anhydro glycosyl donors and diol glycosyl acceptors in the presence of a glycosyl‐acceptor‐derived boronic ester catalyst. The reactions proceed smoothly to give the corresponding 1,2‐cis‐α‐glycosides with high stereo‐ and regioselectivities in high yields without any further additives under mild reaction conditions. In addition
在糖基受体衍生的硼酸酯催化剂存在下,使用1α,2α脱水糖基供体和二醇糖基受体进行区域选择性和1,2-顺-α-立体选择性糖基化反应。反应平稳进行,在温和的反应条件下,无需任何其他添加剂,即可高产率获得相应的具有高立体和区域选择性的1,2-顺-α-糖苷。另外,本糖基化方法已成功地应用于异黄酮糖苷的合成。