Kojic acid-tripeptide amide as a new tyrosinase inhibitor

Biopolymers. 2007;88(2):300-7. doi: 10.1002/bip.20670.

Abstract

Twenty two kojic acid-tripeptide amides were prepared using a solid-phase Fmoc/tBu strategy with Rink Amide SURE(R) resin. To effectively obtain kojic acid-tripeptide amide conjugates, the coupling conditions of kojic acid to the tripeptide on the resin were optimized. The tyrosinase inhibitory activity of kojic acid-tripeptide amides and the effect of the amino acid sequence on the activity were compared with those of kojic acid-tripeptide acids. The stability of kojic acid-tripeptide amides were then compared with those of kojic acid and kojic acid-tripeptides acids. As a consequence, kojic acid-FWY-NH(2) proved to be the best compound, with the highest inhibitory activity, which was maintained over different storage times under various temperatures and pHs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Drug Stability
  • Enzyme Inhibitors / chemical synthesis
  • Enzyme Inhibitors / chemistry*
  • Enzyme Inhibitors / pharmacology*
  • Molecular Structure
  • Monophenol Monooxygenase / antagonists & inhibitors*
  • Oligopeptides / chemical synthesis
  • Oligopeptides / chemistry*
  • Oligopeptides / pharmacology*
  • Pyrones / chemical synthesis
  • Pyrones / chemistry*
  • Pyrones / pharmacology*
  • Structure-Activity Relationship

Substances

  • Enzyme Inhibitors
  • Oligopeptides
  • Pyrones
  • kojic acid
  • Monophenol Monooxygenase