Synthesis and α-glucosidase inhibitory activity evaluation of N-substituted aminomethyl-β-d-glucopyranosides

Bioorg Med Chem. 2013 Sep 1;21(17):5442-50. doi: 10.1016/j.bmc.2013.06.002. Epub 2013 Jun 11.


A series of N-substituted 1-aminomethyl-β-d-glucopyranoside derivatives was prepared. These novel synthetic compounds were assessed in vitro for inhibitory activity against yeast α-glucosidase and both rat intestinal α-glucosidases maltase and sucrase. Most of the compounds displayed α-glucosidase inhibitory activity, with IC50 values covering the wide range from 2.3μM to 2.0mM. Compounds 19a (IC50=2.3μM) and 19b (IC50=5.6μM) were identified as the most potent inhibitors for yeast α-glucosidase, while compounds 16 (IC50=7.7 and 15.6μM) and 19e (IC50=5.1 and 10.4μM) were the strongest inhibitors of rat intestinal maltase and sucrase. Analysis of the kinetics of enzyme inhibition indicated that 19e inhibited maltase and sucrase in a competitive manner. The results suggest that the aminomethyl-β-d-glucopyranoside moiety can mimic the substrates of α-glucosidase in the enzyme catalytic site, leading to competitive enzyme inhibition. Moreover, the nature of the N-substituent has considerable influence on inhibitory potency.

Keywords: 1-Aminomethyl-β-d-glucopyranoside; Sugar mimic; Synthesis; α-Glucosidase.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Enzyme Inhibitors / chemical synthesis*
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / metabolism
  • Glucosides / chemical synthesis
  • Glucosides / chemistry*
  • Glucosides / metabolism
  • Glycoside Hydrolase Inhibitors*
  • Intestines / enzymology
  • Kinetics
  • Protein Binding
  • Rats
  • Saccharomyces cerevisiae / enzymology
  • Structure-Activity Relationship
  • alpha-Glucosidases / metabolism


  • Enzyme Inhibitors
  • Glucosides
  • Glycoside Hydrolase Inhibitors
  • alpha-Glucosidases