Abstract
Six previously undescribed sesquiterpenoids, chrysanthterpenoids H-M (1–6), were isolated from the stem and leaves of Chrysanthemum morifolium Ramat. Structure elucidation of isolated compounds was unambiguously determined based on extensive 1D and 2D NMR spectroscopic analyses. Furthermore, computational prediction of ECD was used to propose the absolute configurations of the compounds. All compounds were evaluated for their anti-asthma effects on RBL-2H3 cells in vitro. The results showed that Compounds 2 and 3 significantly inhibited the release of β-aminohexosidase and improved RBL-2H3 degranulation by chromogenic substrate and high-content imaging. These results suggest that Compounds 2 and 3 may exhibit anti-asthma activities.
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