A tirucallane and two pairs of tetranortriterpene 23-epimers from the Thai mangrove Xylocarpus moluccensis

Abstract

A new tirucallane, 3β-hydroxy-3-decarbonyl-24-epi-piscidinol A (1), and two new pairs of tetranortriterpene 23-epimers, named thaimoluccepimers A (2) and B (3), were isolated from the seeds of a Thai mangrove, Xylocarpus moluccensis. The structures of these compounds were elucidated by HRESIMS and NMR spectroscopic analysis.

Keywords::

• Meliaceae
• Xylocarpus moluccensis
• tirucallane
• tetranortriterpene

Acknowledgements

This work was financially supported by the NSFC (81302693, 31170331, and 81125022), Pearl River S&T Nova Program of Guangzhou (201506010023), the Science and Technology Planning Project of Guangdong Province (2013B051000057), and the Special Financial Fund of Innovative Development of Marine Economic Demonstration Project (GD2012-D01-001).

Disclosure statement

No potential conflict of interest was reported by the authors.