A new sesquiterpene ester from the fruits of Celastrus orbiculatus

Abstract

From the fruits of Celastrus orbiculatus Thunb., a new dihydroagarofuran sesquiterpene ester named 6α,13β-diacetoxy-1β,8β,9β-tribenzoyloxy-β-dihydroagarofuran (1) has been isolated, along with three known compounds: 1β,6α,8β-triacetoxy-9α-benzoyloxy-β-agarofuran (2), 1β,6α-diacetoxy-9α-benzoyloxy-β-dihydroagarofuran (3) and β-sitostrol (4). The structure of 1 was elucidated on the basis of spectroscopic methods.

Keywords:

• 6α,13β-Diacetoxy-1β,8β,9β-tribenzoyloxy-β-dihydroagarofuran
• Sesquiterpene ester

Acknowledgements

Special thanks are due to the Analytical Detective Center, Shenyang Pharmaceutical University, for recording UV, ESI-MS and NMR spectra. We also thank Professor Yunzheng Guo for plant identification.