title: Chemical constituents of Thai propolis.
abstract: 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.
authors: Faculty of Pharmacy, Srinakharinwirot University, Nakhon nayok, 26120, Thailand.
authors: Sirivan
authors: S
authors: Athikomkulchai
authors: Frontier Research Core for Life Sciences, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan; Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan. Electronic address: suresh@inm.u-toyama.ac.jp.
authors: Suresh
authors: S
authors: Awale
authors: Faculty of Pharmaceutical Sciences and College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
authors: Nijsiri
authors: N
authors: Ruangrungsi
authors: Chulabhorn Research Institute, Vipavadee Rangsit Highway, Bangkok 10210, Thailand; Chemical Biology Program, Chulabhorn Graduate Institute, and the Center for Environmental Health, Toxicology and Management of Chemicals (ETM), Thailand.
authors: Somsak
authors: S
authors: Ruchirawat
authors: Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan.
authors: Shigetoshi
authors: S
authors: Kadota
mesh_terms: D005231:Fatty Acids, Unsaturated / Q000737:chemistry / Q000302:isolation & purification*; D044950:Flavanones / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D011429:Propolis / Q000737:chemistry*; D013785:Thailand
chemical_list: D005231:Fatty Acids, Unsaturated; D044950:Flavanones; D011429:Propolis
keywords: Flavanoids; Phenolic esters; Phenylallylflavanones; Thai propolis