A New Benzofuran Derivatives from Flue-Cured Tobacco and Its Anti-Tobacco Mosaic Virus Activity

摘要

A new benzofuran derivative, (2S,3R,4R)-3,4-dihydroxy-2,7-dimethoxy-3,4-dihydro-1(2H)-dibenzofuranone (1), was isolated from the leaves of flue-cured tobacco (a variety of Nicotiana tabacum L). Its structure was elucidated by spectroscopic methods, including extensive 1D and 2D NMR techniques. Compound 1 was also tested for its anti-tobacco mosaic virus activity and it shows potential anti-tobacco mosaic virus activity with inhibition rates of 42.3 %.