Abstract
Two new inositol derivatives, 4-acetate-1,2,3,5-tetrakis(2-methyl-2-butenoate) inositol (1) and 3-acetate-1,2,4,5-tetrakis(2-methyl-2-butenoate) inositol (2), one new flavonolignan 23-o-acetylsilychristin A (3), and one new thymol derivative 3-hydroxy-4-(2-hydroxy-1-methylethyl)benzoic acid (4), along with 13 known compounds, including ten flavonolignans (5-14) and three thymol derivatives (15-17) were isolated from the aerial part of Inula wissmanniana. The structures of new compounds were elucidated by detailed spectroscopic analysis, including HRESIMS and 2D-NMR spectroscopic data. All the compounds were isolated from this plant for the first time. The anti-inflammatory activities of the compounds were tested against LPS-induced NO production in RAW 264.7 macrophages.
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