Matsuda–Heck Arylation of Glycals for the Stereoselective Synthesis of Aryl <i>C</i>-Glycosides
作者:Fabian Otte、Bernd Schmidt
DOI:10.1021/acs.joc.9b02410
日期:2019.11.15
various arene diazonium salts to furnish 2,3-unsaturated aryl C-glycosides in moderate to excellent yields. The products can be further functionalized, e.g., by hydrogenation, epoxidation, or dihydroxylation to furnish 2,3,6-tridesoxy, 2,3-anhydro-6-desoxy, or 6-desoxy aryl C-glycosides, respectively. The method was applied to the synthesis of an α-configured 6-desoxy-gliflozin derivative.
由乳酸1-乙基酯通过串联闭环复分解-异构化序列从头合成的甲氧基甲基保护的1-羟基氨基甲酸酯,与各种芳烃重氮盐进行高度反式非对映选择性的Heck型偶联反应,得到2,3-不饱和芳基C-糖苷的产率中等至优异。产物可以进一步官能化,例如通过氢化,环氧化或二羟基化分别提供2,3,6-三去氧,2,3-脱水-6-去氧或6-去氧芳基C-糖苷。该方法被用于合成α-构型的6-脱氧-格列净衍生物。