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A new benzofuran glucoside from Ficus tikoua Bur
Shao-Peng Wei1, Jie-Yu Luan, Li-Na Lu
1State 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.).
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.
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