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Short Paper | Regular issue | Vol 91, No. 2, 2015, pp.375-380
Published online, 26th December, 2014
DOI: 10.3987/COM-14-13130
Isoprenylated Flavones from Garcinia bracteata and Their Anti-Tobacco Mosaic Virus Activity

Yuehong Yang,1 Limei Li,2 Jie Lou,2 Yang Cheng,1 Yede Wang,2 Duntao Shu,1 Lei Shi,1 Xue-Mei Gao,2 Ping Ning,1,* and Qiufen Hu2,*

*1 Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; 2 Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan University of Nationalities, Kunming 650500, P. R. China

Abstract

Two new isoprenylated flavones, bracteflavones A and B (1 and 2), together with four known isoprenylated flavones (3-6) were isolated from the twigs of Garcinia bracteata. Their structures were elucidated by spectroscopic methods, including extensive 1D- and 2D- NMR techniques. The anti-tobacco mosaic virus (anti-TMV) activities of compounds 1-6 were evaluated, and the results revealed that 1-6 showed potential anti-TMV activity with inhibition rates in the ranges of 17.6-24.3%, respectively.