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Three new benzolactones from Lavandula angustifolia and their bioactivities
Jian-Lian Shi1,2, Shi-Yun Tang1, Chun-Bo Liu1
1a Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China.
Abstract:
Three new benzolactones (1-3), together with four known ones (4-7), were isolated from the whole herb of Lavandula angustifolia. Their structures were established on the basis of detailed spectroscopic analysis (1D- and 2D-NMR, HRESIMS, UV, and IR) and comparison with data reported in the literature. New compounds were evaluated for their anti-tobacco mosaic virus (TMV) activities and cytotoxic activities. The results revealed that compounds 1-3 showed obvious anti-TMV activities with inhibition rates of 26.9, 30.2, and 28.4%, which were at the same grade as positive control. Compounds 1-3 also showed weak inhibitory activities against some tested human tumor cell lines with IC50 values in the range of 32.1-7.6 μM.
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