Tyrosinase-inhibitory long-chain esters from Amberboa ramosa

Chem Pharm Bull (Tokyo). 2005 Jan;53(1):86-9. doi: 10.1248/cpb.53.86.

Abstract

Long-chain esters 1 and 2 have been isolated from the chloroform-soluble fraction of Amberboa ramosa and their structures assigned to be methyl 2beta(2S)-hydroxyl-7(E)-tritriacontenoate (1) and methyl 2beta(2S)-O-beta-D-galactopyranosyl-7(E)-tetratriacontenoate (2). In addition, tricontane (3) and apigenin (4) are also reported for the first time from this species. The structures were assigned on the basis of 1D and 2D NMR techniques. Compounds 1 and 2 showed strong to moderate inhibitory activity against tyrosinase.

MeSH terms

  • Asteraceae*
  • Esters
  • Monophenol Monooxygenase / antagonists & inhibitors*
  • Monophenol Monooxygenase / metabolism
  • Peptides / chemistry*
  • Peptides / isolation & purification*
  • Plant Components, Aerial
  • Plant Extracts / chemistry
  • Plant Extracts / isolation & purification

Substances

  • Esters
  • Peptides
  • Plant Extracts
  • Monophenol Monooxygenase