title: A new benzofuran glucoside from Ficus tikoua Bur.
abstract: From the water-soluble portion of the methanol extract of stems of Ficus tikoua Bur., a new benzofuran glucoside, named 6-carboxyethyl-5-hydroxybenzofuran 5-O-β-d-glucopyranoside (1), together with one known benzofuran glucoside (2) were isolated. Their structures were elucidated by 1D and 2D ((1)H-(1)H COSY, HMQC, and HMBC) NMR spectroscopy and HRMS techniques. The antioxidant activities of the isolated compounds were assayed based on the scavenging activities of DPPH free radical. Compounds 1 and 2 exhibited moderate antioxidant activities, and the IC(50) values were 242.8 μg·mL(-1) and 324.9 μg·mL(-1), respectively.
authors.affiliation: State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A & F University, Yangling 712100, Shaanxi, China; E-Mails:  weishaopeng8888@163.com  (S.-P.W.);  wuwenjun@nwsuaf.edu.cn  (W.-J.W.).
authors.forename: Shao-Peng
authors.initials: SP
authors.lastname: Wei
authors.forename: Jie-Yu
authors.initials: JY
authors.lastname: Luan
authors.forename: Li-Na
authors.initials: LN
authors.lastname: Lu
authors.forename: Wen-Jun
authors.initials: WJ
authors.lastname: Wu
authors.forename: Zhi-Qin
authors.initials: ZQ
authors.lastname: Ji
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D001572:Benzofurans / Q000737:chemistry* / Q000302:isolation & purification; D030681:Ficus / Q000737:chemistry*; D005609:Free Radicals / Q000037:antagonists & inhibitors; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: D000975:Antioxidants; D001572:Benzofurans; D005609:Free Radicals; D005960:Glucosides; D010936:Plant Extracts; C105430:benzofuran