Intramolecular and Ferrier Rearrangement Strategy for the Construction of C1-<i>β</i>-<scp>d</scp>-xylopyranosides: Synthesis, Mechanism and Biological Activity Study
作者:Yuan Yao、Cai-Ping Xiong、Ya-Ling Zhong、Guo-Wei Bian、Nian-Yu Huang、Long Wang、Kun Zou
DOI:10.1002/adsc.201801423
日期:2019.3.5
A stereoselective synthesis of C1‐β‐d‐xylopyranoside derivatives had been developed via intramolecular 1,3‐acyloxy migration/Ferrier rearrangement stategy from readily available propargylic carboxylates and d‐xylal. A combined catalytic system of chloro(triphenylphosphine)gold(I) (Ph3PAuCl) and silver hexafluoroantimonate (AgSbF6) was found to possess the most effective of the reaction, and 20 examples
立体选择性合成C1- β - d-吡喃吡喃糖苷衍生物是通过分子内1,3-酰氧基迁移/费勒重排策略从易得的炔丙基羧酸盐和d-木糖醛中合成的。氯(三苯基膦)金(I)(Ph 3 PAuCl)和六氟锑酸银(AgSbF 6)被发现具有最有效的反应,并且20个实施例测试了这些转化的广泛功能相容性。利用核磁共振(NMR),红外光谱(IR),高分辨率电喷雾电离质谱(HRESIMS)和同位素标记实验来研究C1-糖基化过程。产品的相对构型由二维(2D)NMR NMR和电子圆二色光谱确定。3-(4,5)-Dimethylthiahiazo(-z-y1)-3,5-diphenytetrazoliumromide(MTT)细胞活力测定表明,其中三个显示出对带有IC的人胃癌HGC-27细胞的强抗增殖活性50值为17.09-38.88μM。这种方法为生物活性的C-糖基化分子的合成开辟了新的视野。