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Abstract
As a part of our systematic study on Castanopsis genus (Fagaceae), one new triterpene hydrolysable tannin (1) and two new phenol glucosides (2 and 3) were isolated from the leaves of Castanopsis eyrei (Champ. ex Benth.) Hutch. Compound 1 was identified as a triterpene hexahydroxydiphenoyl (HHDP) ester. This type of compounds has only been isolated from Castanopsis genus. The structures of 1-3 were elucidated by the combination of spectroscopic analysis (MS, 1 D and 2 D NMR) and chemical evidence.
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Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Funding
This work was supported by the Basic research fund of Guangxi Academy of Sciences (CQZ-C-1901) and the Key-Area Research and Development Program of Guangdong Province (2020B1111110003).