tocopherylquinone and gamma-sitosterol

Four phenolics, salviaplebeiaside (1), γ-tocopherol (2), chrysosplenol-D (4), and isovitexin (5), along with α-tocoquinone (3) and β-sitosterol (6) were isolated from the aerial parts of Vitex negundo var. cannabifolia. The isolation was performed using bio-assay tracking experiments. The structures of compounds 1-5 were established by spectroscopic means. The antibacterial activities of the compounds were assessed against Escherichia coli, Bacillus subtilis, Micrococcus tetragenus and Pseudomonas fluorescens. Chrysosplenol-D (4) exhibited activities against all the four spoilage microorganisms.

Topics: Anti-Bacterial Agents; Apigenin; Bacillus subtilis; Escherichia coli; Flavonoids; gamma-Tocopherol; Micrococcus; Phenols; Plant Components, Aerial; Plant Extracts; Pseudomonas fluorescens; Sitosterols; Vitamin E; Vitex