Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (6): 20250389.doi: 10.7503/cjcu20250389

• Organic Chemistry • Previous Articles     Next Articles

Highly Chemo- and Stereoselective Synthesis of S-Glycosides from Euparin and Their α -Glucosidase Inhibitory Activity

ZHAO Yu, FU Zishuai, ZHANG Ying, LI Linxuan(), LIU Zhaoxia(), YAO Hui, HUANG Nianyu, WANG Nengzhong()   

  1. College of Biological and Pharmaceutical Sciences,Hubei Key Laboratory of Natural Products Research and Development,China Three Gorges University,Yichang 443002,China
  • Received:2025-12-22 Online:2026-06-10 Published:2026-01-17
  • Contact: LI Linxuan E-mail:lilinxuan@ctgu.edu.cn;liuzhaoxia@ctgu.edu.cn;wangnz@ctgu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22207063);the Hubei Provincial Central Government Guided Local Science and Technology Development Project, China(2024BSB016);the Hubei Provincial Natural Science Foundation of China(2025AFD262);the 111 Project, China(D20015);the Opening Funding of Hubei Key Laboratory of Natural Products Research and Development(China Three Gorges University), China(2024NPRD03)

Abstract:

Herein, novel S-glycoside derivative was designed and synthesized using euparin as the aglycone. Employing a palladium-catalyzed strategy, 22 S-glycosides were efficiently synthesized under mild conditions with high chemoselectivity and stereoselectivity. Evaluation of the in vitroα-glucosidase inhibitory activities of these compounds showed that compounds 5a, 5d, and 7 exhibited potent inhibitory activity, with IC50 values of 2.7, 5.7 and 12.1 μmol/L, respectively. Molecular docking studies revealed that these active compounds bind to the active site of α-glucosidase through hydrogen bonds(with ASP382 and HIS326 residues) and π-π stacking interactions(with PHE144 residue), contributing to high binding affinity(docking score: -32.409 kJ/mol). This study provides a mild and efficient synthetic method for euparin-derived S-glycosides and identifies promising lead compounds for the development of novel anti-diabetic drugs.

Key words: Diabetes mellitus, Euparin, α-Glucosidase, S-Glycoside, Palladium catalysis

CLC Number: 

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