Synthesis of monomeric methylene-linked 1,2,3-triazole glycoconjugates from allo- and glucofuranoses
作者:Jeļena Grigorjeva、Jevgeņija Uzuleņa、Vitālijs Rjabovs、Māris Turks
DOI:10.1007/s10593-015-1791-5
日期:2015.10
at the glycosidic or terminal carbons of the carbohydrates, but at C-3 position showed a potential of this type of structures as the ligands for various glycosidases and galectins. Here, we report synthesis of protected monomeric 3-C-(triazolylmethyl)-substituted gluco- and alloconjugates. Diastereomeric azides are synthesized from common intermediate, 3-deoxy-1,2:5,6-di-O-isopropylidene-3-oxo-α-D-allofuranose
碳水化合物-三唑共轭物证明自己是有价值的酶活性调节剂。对非平凡缀合物的最新研究表明,该键不是在糖的糖苷或末端碳上而是在C-3位置形成的,显示出这种结构作为各种糖苷酶和半乳糖凝集素的配体的潜力。在这里,我们报道了受保护的3- C-(三唑基甲基)-取代的葡萄糖-和同种共轭物的合成。非对映体叠氮化物是由常见的中间体3-deoxy-1,2:5,6 -di - O -isopropylidene-3-oxo-α-D-alalfuranose合成的,并用于Cu催化的叠氮化物-炔烃环加成反应(CuAAC)与商业炔烃。在不同的催化条件下,环加成反应的产率良好至优异。