stigmasterol and vanillin

To study the chemical constituents of Juncus setchuensis.. Column chromatography was used in the isolation procedure. The structures of isolated compounds were elucidated by spectral data.. Eight compounds were isolated and their structures were identified as 2-hydroxy-3-methylanthraquinone (1), physcion (2), stigmasterol (3), stigmast-3,6-dione (4), vanillin (5), n-heptacosanoic acid (6), trans-hydroxycinnamic (7) and 4-hydroxy-3-methoxy benzoic acid (8).. Compound 1, 2, 4 and 6 are obtained from this genus for the first time and all the compounds are obtained from this plant for the first time.

Topics: Anthraquinones; Benzaldehydes; Drugs, Chinese Herbal; Emodin; Hypoglycemic Agents; Magnetic Resonance Spectroscopy; Magnoliopsida; Molecular Structure; Plant Components, Aerial; Stigmasterol

One new lignan, machilolin-A (1), was isolated from the leaves of Machilus zuihoensis Hayata var. mushaensis (Lu) Y. C. Liu (Lauraceae), together with three known compounds, vanillin (2), beta-sitosterol (3) and stigmasterol (4). The structure of 1 was elucidated based on chemical analysis and spectral methods (IR, 1D and 2D NMR, HR-FAB-MS, EI-MS).

Topics: Benzaldehydes; Lauraceae; Lignans; Molecular Structure; Nuclear Magnetic Resonance, Biomolecular; Plant Leaves; Sitosterols; Spectrometry, Mass, Electrospray Ionization; Spectrometry, Mass, Fast Atom Bombardment; Stigmasterol