Phenolic glycosides with antioxidant activity from the stem bark of Populus davidiana |
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Authors: | Zhang Xinfeng Thuong Phuong Thien Min Byung-Sun Ngoc Tran Minh Hung Tran Manh Lee Ik Soo Na MinKyun Seong Yeon-Hee Song Kyung-Sik Bae KiHwan |
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Affiliation: | College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea, College of Pharmacy, Catholic University of Daegu, Gyeongbuk 712-702, Korea. |
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Abstract: | Phytochemical study on the EtOAc-soluble fraction of the stem bark of Populus davidiana resulted in the isolation of 10 phenolic glycosides (1-10), which were identified on the basis of physicochemical and spectroscopic analyses. Among these, three new compounds, populosides A-C (1-3), were determined to be 2-coumaroylmethyl-4-hydroxyphenyl-beta-D-glucopyranoside, 2-coumaroylmethylphenyl-beta-D-glucopyranoside, and 2-feruoylmethylphenyl-beta-D-glucopyranoside, respectively. Compounds 1-10 were tested for their radical scavenging activity against an azo radical, ABTS*+. Of these, populosides A-C (1-3), populoside (4), grandidentatin (8), salireposide (9), and coumaroyl-beta-D-glucoside (10) exhibited antioxidant activity in this assay. |
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