Synthesis of Per‐acetyl<scp>d</scp>‐fucopyranosyl Bromide and Its Use in Preparation of Diphyllin<scp>d</scp>‐fucopyranosyl Glycoside
作者:Zhao Yu、Lu Ya‐Peng、Zhu Li
DOI:10.1080/07328300802030860
日期:2008.5
The per‐O‐acetyl‐d‐fucosyl bromide (9) was expediently prepared for C‐6 deoxygenation of d‐galactose in six steps in 32.5% yield. Employing phase transfer catalysis glycosylation (PTC), d‐fucopyranosyl diphyllin (4), the analog of natural diphyllin glycoside, was synthesized by using 9 as the glycosyl donor in 67.1% in two steps. The product was identified by 1H NMR, 13C NMR, and HRMS. Its abilities
所述per- Ô乙酰基d -fucosyl溴化物(9)中的溶液方便地为C-6的脱氧制备d在32.5%收率六个步骤半乳糖。利用相转移催化糖基化(PTC),通过使用9作为67.1%的糖基供体,分两步合成了天然双叶甘油糖苷的类似物d-呋喃果糖基双糖苷(4)。产物通过1 H NMR,13 C NMR和HRMS鉴定。还讨论了其在体外抑制癌细胞生长的能力。