科研之友
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摘要
A new compound, 2,4,6-trihydroxybenzoic acid 4-O-beta-D-allopyranoside (1), together with four known compounds, sucrose (2), fructose (3), ecdysterone (4), and beta-sitosterol (5) was isolated from the roots of Neocheiropteris palmatopedata (Baker) Christ. The new compound was identified based on extensive spectroscopic studies including HR-ESI-MS, FAB-MS, (1)H NMR, (13)C NMR, DEPT, (1)H-(1)H COSY, HSQC, HMBC, and NOESY spectra, and the known compounds were identified by their spectroscopic data analysis, comparison with reports in the literature, and co-chromatography with authentic standards. Compounds 2, 3, and 5 were obtained from the Neocheiropteris genus for the first time, and 4 was originally isolated from the plant.
