alpha-asarone and gamma-sitosterol

To investigate the chemical constituents from Gynanchum paniculatum.. The constituents were isolated and purified by silica gel, Sephadex LH-20 column chromatography, and preparative TLC. Their structures were identified on the basis of spectral data and physiochemical characteristics.. 15 compounds were isolated from 70% ethanol extract and identified as β-sitosterol(1), β-daucosterin (2), mudanoside A (3), paeonolide (4), santamarin (5), paeonol(6), annobraine (7), laricircsinol (8), α-asarone(9), 7-angelyheliotridine(10), β-amyrin(11), uridine(12), kaempferol-3-O-β-D-glucopyranosyl(1→2)α-L-arabinopyranoside(13), kaempferol-7-O-(4", 6"-di-p-hydroxycinnamoyl-2", 3"-diacetyl)-β-D-glucopyranoside(14), and (2S, E)-N-[2-hydroxy-2-(4-hydroxyphenyl) ethyl] ferulamide (15).. Compounds 4, 6, 8, 11, 12 and 15 are isolated from this plant for the first time, compounds 5 and 14 are firstly isolated from the palnts of Cynanchum genus.

Topics: Allylbenzene Derivatives; Anisoles; Cynanchum; Kaempferols; Phytochemicals; Sitosterols

To study the chemical constituents of the roots and rhizomes of Asarum longerhizomatosum.. Chromatography and spectral analysis were used to isolate the constituents and elucidate their structures.. Five compounds were isolated from the ethanol extracts of the roots and rhizomes, and identified as asarone(I), beta-sitosterol(II), 2,4,5-trimethoxybenzaldehyde(III), 4-(2,4,5-trimethoxyphenyl)-3-en-butylone(IV) and 3 beta-hydroxystigmast-5-en-7-one(V).. All the compounds were isolated from the plant for the first time, and IV is a new natural product.

Topics: Allylbenzene Derivatives; Anisoles; Asarum; Plant Roots; Plants, Medicinal; Rhizome; Sitosterols