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Short Paper | Regular issue | Vol 89, No. 6, 2014, pp.1455-1462
Published online, 23rd April, 2014
DOI: 10.3987/COM-14-12934
A New Flavonoid Glycoside and Four Other Chemical Constituents from Viscum coloratum and Their Antioxidant Activity

Ronghua Fan, Yuying Ma, Hongxia Yuan, Yongzhi Zhang, Binbin Wei, Yunli Zhao,* and Zhiguo Yu*

*School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China

Abstract

A new flavonoid glycoside, identified as rhamnazin-3-Ο-β-D-(6′′-β-hydroxy-β-methylglutaryl)-D-glucoside-4′-Ο-β-D-glucoside (1), along with four known compounds, shikimic acid (2), quebrachitol (3), abscisic acid (4), 3,5-dihydroxy-1,7-bis(4-hydroxyphenyl)heptane (5), were isolated from the branches and leaves of Viscum coloratum. Their structures were elucidated on the basis of MS, 1D NMR, and 2D NMR techniques. All compounds were isolated in the family Loranthaceae for the first time. This paper describes the isolation, structural elucidation as well as in vitro antioxidant activity of these isolates.