Popis: |
Phytochemical investigation on the constituents of Thai propolis led the isolation of a newphenylallylflavanone, (7″S)-8-[1-(4′-hydroxy-3′-methoxyphenyl)prop-2-en-1-yl]-(2S)-pinocembrin (1)and(E)-cinnamyl-(E)-cinnamylidenate ( 2) from methanolic extract of Thaipropolis.Their structures weredetermined onthebasis ofextensiveNMRspectroscopicanalysis.In addition to this, 19 compounds (3–21) belonging to flavonoids and phenolic esters wereisolated and identified.© 2013 Elsevier B.V. All rights reserved. |