作者:Luz M. Rosado、Terence J. Meyerhoefer、Saqib M. Bett、Saba. Ilyas、Lubabalo. Bululu、Carla A. Martin、Troy W. Joseph、Michael De Castro
DOI:10.1002/ejoc.201600350
日期:2016.6
We herein report the coupling of various amides and ureas to glycosyl halides in the presence of silver triflate at room temperature. A 1:1 mixture of α/β diastereomers was obtained when alkyl/heteroaryl amides and substituted ureas were added to gluco and galacto haloglycosides. The effect of temperature, halogen, protecting group of the sugar and substituent of the amide in the overall yields and
我们在此报告了在室温下在三氟甲磺酸银存在下各种酰胺和脲与糖基卤化物的偶联。当将烷基/杂芳基酰胺和取代的脲加入葡糖和半乳糖卤代糖苷时,得到 1:1 的 α/β 非对映体混合物。还探讨了温度、卤素、糖的保护基团和酰胺的取代基对反应的总产率和立体选择性的影响。当在反应中使用乙酰保护的葡萄糖醛酸酰胺时,在室温下以良好的收率获得了相应假双糖的β端基异构体作为主要异构体。使用 HeLa 癌细胞对新合成的化合物进行了活力研究。本研究还讨论了获得的结果。