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Synthesis of MeON-neoglycosides of Digoxigenin with 6-deoxy- and 2,6-dideoxy-d-glucose Derivatives and Their Anticancer Activity
Bioorganic & Medicinal Chemistry Letters
  • Dong-Dong Wang, Jinan University
  • Xiao-San Li, Jinan University
  • Yu-Zhou Bao, Xiamen University
  • Jie Liu, Xiamen University
  • Xiao-Kun Zhang, Xiamen University
  • Xin-Sheng Yao, Jinan University
  • Xue-Long Sun, Cleveland State University
  • Jin-Shan Tang, Jinan University
Document Type
Article
Publication Date
8-1-2017
Abstract

Cardiac glycosides show anticancer activities and their deoxy-sugar chains are vital for their anticancer effects. In order to study the structure-activity relationship (SAR) of cardiac glycosides toward cancers and get more potent anticancer agents, a series of MeON-neoglycosides of digoxigenin was synthesized and evaluated. First, ten 6-deoxy- and 2,6-dideoxy-d-glucopyranosyl donors were synthesized starting from methyl α-d-glucopyranoside and 2-deoxy-d-glucose. Meanwhile, the digoxigenin was obtained by acidic hydrolysis of commercially available digoxin as glycosyl acceptor. Then, a 22-member MeON-neoglycoside library of digoxigenin was successfully synthesized by neoglycosylation method. Finally, the induction of Nur77 expression and its translocation from the nucleus to cytoplasm together with cytotoxicity of these MeON-neoglycosides were evaluated. The SAR analysis revealed that C3 glycosylation is required for their induction of Nur77 expression. Moreover, some MeON-neoglycosides (2b and 8b) could significant induce the expression of Nur77 and its translocation from the nucleus to cytoplasm. However, these compounds showed no inhibitory effects on the proliferation of cancer cells, suggesting that they may not induce apoptosis of NIH-H460 cancer cells and their underlying potential and application toward cancer cells deserves future study.

Comments

This work was supported by National Natural Science Foundation of China (No 81673320, 81502406), the State Key Laboratory of Drug Research (No SIMM1601KF-09), and the National 111 Project of China (No. B13038), and Fujian young teacher education research project (JA14009).

DOI
10.1016/j.bmcl.2017.06.008
Citation Information
Wang, D.; Li, X.; Bao, Y.; Liu, J.; Zhang, X.; Yao, X.; Sun, X.-L.; Tang, J.-S. Bioorganic & Medicinal Chemistry Letters 2017, 27 (15), 3359–3364.