Year: 1963
Type: article
Abstract: A glycoside, isolated from the fresh root of Polygonum cuspidatum SIEB. et ZUCC. and named polydatin, was newly examined. Its molecular formula corresponded to C20H22O8⋅3H2O and its constants were m. p. 225-226°, [α]D27 -74.9° (c=1.709, EtOH). Its hydrolysis afforded a phenol, C14H12O3, and glucose. The aglycone formed an acetate (C20H18O6), methylate (methoxide) (C17H18O3), benzoate (C35H24O6), and a dihydro derivative (C14H14O3). The ultraviolet spectra of these derivatives resembled those of stilbene derivatives. Oxidative decomposition of the methylated glycoside afforded anisic acid and the same treatment of the methylated aglycone gave anisic acid and 3, 5-dimethoxybenzoic acid. These experimental evidences indicate that the aglycone is resveratrol and the glycoside was identified as 3, 4′, 5-trihydroxystilbene-3-β-mono-D-glucoside (piceid). An anthraquinone and resveratrol were isolated from the ether-soluble portion and the latter was identified through paper partition chromatography and mixed melting point determination.
Source: YAKUGAKU ZASSHI
Institution: Kumamoto University
Language: Japanese
Subfield: Plant Science
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W2223295563