Copper(I)-Catalyzed Sandmeyer-Type <i>S</i>-Arylation of 1-Thiosugars with Aryldiazonium Salts under Mild Conditions
作者:Rapelly Venkatesh、Varsha Tiwari、Jeyakumar Kandasamy
DOI:10.1021/acs.joc.2c00930
日期:2022.9.2
Preparation of S-aryl thioglycosides from 1-thiosugars via S-arylation was demonstrated under mild reaction conditions. A wide range of protected and unprotected 1-thiosugars derived from glucose, glucosamine, galactose, mannose, ribose, maltose, and lactose underwent cross-coupling reactions with functionalized aryldiazonium salts in the presence of copper(I) chloride and DBU. The desired products
在温和的反应条件下证明了通过S-芳基化从 1-硫糖制备S-芳基硫糖苷。在氯化铜 (I) 和 DBU 存在下,衍生自葡萄糖、氨基葡萄糖、半乳糖、甘露糖、核糖、麦芽糖和乳糖的多种受保护和未受保护的 1-硫糖与官能化芳基重氮盐发生交叉偶联反应。在 5 分钟内以 55-88% 的收率获得所需的产品。在标准反应条件下可以耐受各种官能团,包括卤素。证明了生物学相关的抗糖尿病药 dapagliflozin S -类似物和熊果苷S -类似物(酪氨酸酶抑制剂)的合成。