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Chrysanolide A, a novel guaianolide-type sesquiterpenoid trimer (3), along with its biogenetically related monomer (Chrysanolide B, 1) and dimer (Chrysanolide C, 2), were simultaneously isolated from Chrysanthemum indicum L flowers. Their structures and absolute configurations were elucidated via spectroscopic and computational methods. All isolated compounds were evaluated for their anti-HBV activities.
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Gu et al. (2013) studied this question.
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