In total, forty six compounds, including the novel compound lobechine (1), were characterized from the methanol extracts of Lobelia chinensis. The chemical structures of known metabolites were identified by comparing their spectroscopic and physical data with compounds reported in the literature. The structure of lobechine (1) was comprehensively established with the aid of 1D and 2D NMR spectroscopic analyses. In addition, selected isolates were screened for their inhibition of HSV-1 replication, superoxide anion generation, and elastase release. Among the tested compounds, scoparone (10) exhibited significant inhibition of superoxide anion generation with IC50 of 6.14 ± 1.97 μM and lobechine (1) exhibited moderate inhibition of elastase release with IC50 of 25.01 ± 6.95 μM, respectively.
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Kuo, PC., Hwang, TL., Lin, YT. et al. Chemical constituents from Lobelia chinensis and their anti-virus and anti-inflammatory bioactivities. Arch. Pharm. Res. 34, 715 (2011). https://doi.org/10.1007/s12272-011-0503-7
- Lobelia chinensis
- Superoxide anion generation
- Elastase release