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Abstract
Two new flavonoids, uncinataflavones A (1) and B (2), along with one known compound 6-(5-carboxyl-2-methoxyphenyl)-apigenin (3), were isolated from Selaginella uncinata (Desv.) Spring. All these compounds belong to apigenin derivatives with aryl substituents at C-6 position. The structures of new compounds were elucidated on the basis of comprehensive spectroscopic analyses (UV, IR, 1D, and 2D NMR as well as HR-ESI-MS).
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No potential conflict of interest was reported by the authors.
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Funding
This work was supported financially by grants from the National Natural Science Foundation of China [grant number 31370370], the Construct Program of the Key Discipline of Basic Medicine in Hunan Province, Scientific Research Fund of Hunan Provincial Education Department [grant number 14C0709], Key Project of Science and Technology of Hunan Province, China [grant number 2014SK2002], and the Science and Technology Planning Project of Hunan Province, China [grant number 2013SK5077].