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自菊科蒿属植物万年蒿(Artemisia Sacrorum Ledeb)地上部分首次分得三个贝壳杉烷型(Kauranetape)二萜类化合物,经理化常数测定及光谱分析(IR,’H-NMR,~(13)C-NMR,MS,二维核磁共振光谱)鉴定其结构分别为:3α,16α,17-三羟基贝壳杉烷[I],3α,16α-二羟基贝壳杉烷-17-0-β-D-葡萄糖甙[Ⅱ]和16α-羟基贝壳杉-3-酮-17-0-β-D-葡萄糖甙[Ⅲ]。其中[Ⅰ]为一新天然产物,[Ⅱ]为一未见报道的新化合物。通过对该三个化合物的~(13)C-NMR光谱分析,讨论了不同位置取代基对其~(13)C-NMR光谱化学位移的影响。
Three kaurinetape diterpenoids were isolated from the aboveground part of Artemisia Sacrorum Ledeb for the first time. The determination of the managerial constants and spectral analysis (IR, ’H-NMR, ~( 13) C-NMR, MS, 2D NMR spectroscopy) The structures were identified as: 3α, 16α, 17-trihydroxykafane [I], 3α, 16α-dihydroxykafane-17-0-β -D-Glucoxiridine [II] and 16α-Hydroxykarotene-3-one-17-0-β-D-Glucose [III]. Among them, [I] is a new natural product, and [II] is a new compound that has not been reported. Through the ~(13)C-NMR spectroscopic analysis of these three compounds, the effect of substituents at different positions on the chemical shift of ~(13)C-NMR spectra was discussed.