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Abstract
Eight tetranortriterpenoids (1–8) and two sesquiterpenoids (9 and 10) including two new compounds, cineracipadesin G (1) and 1β-hydroperoxy-6α-hydroxy-eudesm-4(15)-ene (9), were isolated from the EtOAc extract of branches of Cipadessa cinerascens. The structures of two new compounds were elucidated by 1D and 2D NMR and MS spectroscopic analyses. The anti-feedant activity of two tetranortriterpenoids (1 and 7) was tested and obvious anti-feedant effects were detected.
Acknowledgments
This work was financially supported by the Special Fund for Agro-Scientific Research in the Public Interest (201303117), the National Support Science and Technology Subject (2013BAI11B04), the Major Technology Project of Hainan (ZDZX2013008-4, ZDZX2013023-1), and the Fundamental Scientific Research Funds for CATAS (ITBB110301, ITBB140401). The authors are grateful to the members of the analytical group of the Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences for the spectral measurements.
Notes
1. These authors contributed equally to this work.