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Chemical constituents of Thai propolis
- Athikomkulchai, Sirivan, Awale, Suresh, Ruangrungsi, Nijsiri, Ruchirawat, Somsak, Kadota, Shigetoshi
- Fitoterapia 2013 v.88 pp. 96-100
- chemical composition, esters, flavonoids, nuclear magnetic resonance spectroscopy, propolis
- Phytochemical investigation on the constituents of Thai propolis led the isolation of a new phenylallylflavanone, (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 Thai propolis. Their structures were determined on the basis of extensive NMR spectroscopic analysis. In addition to this, 19 compounds (3–21) belonging to flavonoids and phenolic esters were isolated and identified.