Chemical constituents in stem of Acanthus ilicifolius / 中草药

ABSTRACT

Objective To study the chemical constituents in the stem of Acanthus ilicifolius.Methods Some compounds were repeatedly isolated and purified on silica gel column chromatography and vacuum liquid chromatography,their chemical structures were elucidated by their physicochemical properties and spectral data,such as IR,(()~1HNMR),(()~(13)C-NMR),and ESI-MS.Results Eight compounds were obtained from the stem of A.ilicifolius and identified as hexacosanoic acid(Ⅰ),stigmasterol(Ⅱ),tetratriacontanol(Ⅲ), 2-benzoxazolinone(Ⅳ),stigmasterol-3-O-?-D-glucopyranoiside(Ⅴ),vanillic acid(Ⅵ),4-hydroxy-2-benzoxazolone(Ⅶ),quercetin(Ⅷ).Conclusion Compound Ⅶ is first reported as a natural product.Compounds Ⅰ,Ⅲ,and Ⅵ-Ⅶ are reported from this plant for the first time.