| Summary: | 碩士 === 國立成功大學 === 化學系碩博士班 === 91 === The dried stems of Spiraea formosana (8.60 Kg) were extractdwith EtOH, and then concentrated under reduce pressure to give darkbrown crude extract 1.02 kg. The crude extract was partitioned bet-ween H2O and CHCl3, and then with n-BuOH. Forty compounds were isolated from each partitioned fraction of this plant by usuallychromatographic methods. The structure of thirty-nine compounds were determined by spectral analysis and chemical transformation.
They are agrimonolide, 3-O-β-D-glucosyl-4’,5-dihydroxystil-bene, 3,4’,5-trihydroxystilbene, p-hydroxybenzoic acid, methyl vanill-ate, p-hydroxybenzaldehyde, veratric acid, syringic acid, nonadecyl ferulate, p-hydroxycinnamaldehyde, methyl ferulate, ethyl p-hydroxy-trans-cinnamate, ethyl ferulate, bakuchiol, (-)-isolariciresinol-3a-O-β-D-glucopyranoside, aurantiamide acetate, N,N-dimethyladenine, me-thyl quinate, (+)-5,7-dihydroxy-2-(3’,4’-methylenedioxyphenyl)chro-man-4-one, β-sitosterone, mixture sitgmasterol and β-sitosterol, 3-O-β-D-glucosyl-p-vanillic acid, vanillic acid, uridine, nanodecyl-3-(4-hydroxyphenyl)propioate, β-sitosterol, glutinol, β-amyrin, quercetin-3-O-β-D-glucopyranoside, quercetin, quercetin-3-O-β-D-galactopyrano-side, kaempferol-3-O-β-D-glucopyranoside, p-coumaric acid, β-sitoster-yl glucoside. Among them, new compounds, spiraeaine A and spira-formin-A~D were isolated from natural source for the first time.
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