Stereocontrolled Synthesis of <i>α</i>‐3‐Deoxy‐<scp>d</scp>‐manno‐oct‐2‐ulosonic Acid (<i>α</i>‐Kdo) Glycosides Using C3‐<i>p</i>‐Tolylthio‐Substituted Kdo Donors: Access to Highly Branched Kdo Oligosaccharides
作者:Ao Sun、Zipeng Li、Yuchao Wang、Shuai Meng、Xiao Zhang、Xiangbao Meng、Shuchun Li、Zhongtang Li、Zhongjun Li
DOI:10.1002/anie.202313985
日期:2024.1.8
glycosylation of 3-deoxy-d-manno-2-octulosonic acid (Kdo). The high reactivity and wide substrate scope of the donor enabled the synthesis of a range of Kdo-containing glycosides with complete α-stereoselectivity without the formation of 2,3-ene by-products. Several natural oligosaccharides were synthesized by a stepwise or one-pot process, including a highly branched Kdo pentasaccharide.
已开发出一种用于 3-脱氧-d-甘露-2-辛糖酸 (Kdo) 糖基化的修饰供体。供体的高反应活性和广泛的底物范围使得能够合成一系列具有完全α-立体选择性的含Kdo糖苷,而不形成2,3-烯副产物。通过分步或一锅法合成了几种天然低聚糖,包括高度支化的 Kdo 五糖。