[关键词]
[摘要]
首次从藏药“生等”,即鼠李科猫乳属植物西藏猫乳Rhamnella gilgitica的干燥心材中分离并鉴定了9个黄酮体化合物,分别是墨沙酮(maesopsin,Ⅰ),香橙素(aromadendrin,Ⅱ),柚皮素(naringenin,Ⅲ),山柰酚(kaempferol,Ⅳ),懈皮素(quercetin,Ⅴ),花旗松素(taxifolin,Ⅵ),顺-4,6,4’-三羟基异噢[(z)-4,6,4’-trihydroxyaurone,Ⅶ],4,6,4’-三羟基异噢(4,6,4’-trihydroxyisoaurone,Ⅷ),山柰酚-7-O-β-D-葡萄糖甙(kaempferol-7-O-β-D-glucoside,Ⅸ).其中化合物Ⅰ为主要成分,得率0.41%;化合物Ⅷ为首次从天然界获得。
[Key word]
[Abstract]
Shengdeng, a traditional Tibetan medicinal herb, is the heartwood of Rhamnella gilgitica Mansf. et Melch (Rhamnaceae) Nine flavonoids were isolated for the first time,by extraction with 70% alcohol. Their structures were elucidated on the basis of spectral data and physico-chemical properties as maesopsin (Ⅰ, yield 0. 41%,a major constituent), aromadendrin (Ⅱ),naringenin (Ⅲ), kaempferol (Ⅳ), quercetin (Ⅴ),taxifolin (Ⅵ), (Z)-4, 6, 4' -trihydroxyaurone (Ⅶ), 4, 6, 4' -trihydroxyisoaurone (Ⅷ)and kaempferol-7-Oβ-D-glucoside(Ⅸ). Compound Ⅷ was obtained from nature for the first time.
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[基金项目]
国家自然科学基金