An efficient synthesis of triazolo-carbohydrate mimetics and their conformational analysis
作者:Hikaru Yanai、Shun Obara、Takeo Taguchi
DOI:10.1039/b803924k
日期:——
A chemical library of 1,2,3-triazole fused carbohydrate mimetics was constructed. To synthesize enantiomerically pure mimetics, we developed a stereo- or diastereodivergent synthetic route from D-glucose, D-mannose and D-galactose as chiral sources. In this synthesis, an In(OTf)(3)-catalyzed tandem azidation-1,3-dipolar cycloaddition reaction of 1,1-dimethoxyhex-5-yne derivatives with TMSN(3) was used
构建了1,2,3-三唑稠合碳水化合物模拟物的化学文库。为了合成对映体纯的模拟物,我们从D-葡萄糖,D-甘露糖和D-半乳糖作为手性来源开发了立体或非对映异构的合成路线。在该合成中,将In(OTf)(3)催化的1,1-二甲氧基己基-5-炔衍生物与TMSN(3)的串联叠氮化1,3-偶极环加成反应用作构建4的关键步骤。 ,5,6,7-四氢[1,2,3]三唑并[1,5-a]吡啶骨架。另外,使用NMR对合成的模拟物进行构象分析,由于它们具有N,O-乙缩醛部分代替正常吡喃糖苷的异头位置,因此具有结构上的意义。