Abstract
From the EtOAc-soluble fraction of a MeOH extract of leaves of Cinnamosma fragrans, seven new compounds, including 3,4-seco-24-homo-28-nor-cycloartane, drimane-type sesquiterpenes and their lactams, and two known compounds were isolated. Their structures were elucidated by extensive analyses of spectroscopic data. The cytotoxicity, anti-multidrug resistance activity, and anti-Leishmania activity of a cycloartane derivative and drimane-type sesquiterpene derivatives were assayed. The cycloartane derivative showed strong cytotoxicity, and some drimanes and drimane lactam showed moderate anti-multidrug resistance and anti-Leishmania activity.
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Acknowledgments
The authors are grateful for access to the superconducting NMR instrument (JEOL JNM α-400) at the Analytical Center of Molecular Medicine of the Hiroshima University Faculty of Medicine, and an Applied Biosystem QSTAR XL system ESI (Nano Spray)-MS at the Analysis Center of Life Science of the Graduate School of Biomedical Sciences, Hiroshima University. This work was supported in part by Grants-in-Aid from the Ministry of Health, Labour and Welfare. Thanks are also due to the Research Foundation for Pharmaceutical Sciences and the Takeda Science Foundation for the financial support.
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Nomoto, Y., Harinantenaina, L., Sugimoto, S. et al. 3,4-seco-24-homo-28-nor-Cycloartane and drimane-type sesquiterpenes and their lactams from the EtOAc-soluble fraction of a leaf extract of Cinnamosma fragrans and their biological activity. J Nat Med 68, 513–520 (2014). https://doi.org/10.1007/s11418-014-0828-x
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DOI: https://doi.org/10.1007/s11418-014-0828-x