A New Chromone from the Stem of Flue-Cured Tobacco and Its Anti-tobacco Mosaic Virus Activity

摘要

A new chromone, 6-acetyl-7-methoxy-2,3-dimethyl-4H-chromen-4-one (1), was isolated from the stems 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 (anti-TMV) activity and it shows potential anti-tobacco mosaic virus activity with inhibition rates of 25.4 %.