| 铁皮石斛多糖的研究 |
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| 引用本文： | 杨虹,王顺春,王峥涛,胡之璧. 铁皮石斛多糖的研究[J]. 中国药学杂志, 2004, 39(4): 254-255 |
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| 作者姓名： | 杨虹 王顺春 王峥涛 胡之璧 |
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| 作者单位： | 1. 上海中医药大学中药研究所,上海,201203;中国药科大学生药研究室,江苏,南京,210038
2. 上海中医药大学中药研究所,上海,201203 |
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| 摘 要： | 目的 研究铁皮石斛多糖DT2,DT3的化学结构。方法 运用糖组成分析、甲基化分析及NMR等方法确定多糖的结构。结果 DT2,DT3的数均分子量分别为7.4×105,5.4×105,主要含有葡萄糖、半乳糖、木糖及少量阿拉伯糖和甘露糖,摩尔比分别为5.9:1.0:1.0:0.8:0.5和7.9:1.3:1.0:0.5:0.7。结论 这两个多糖为首次从铁皮石斛中分离得到。
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| 关 键 词： | 铁皮石斛 多糖 化学结构 |
| 文章编号： | 1001-2494(2004)04-0254-03 |
| 收稿时间： | 2003-05-16; |
Structural analysis of polysaccharides from Dendrobium candidum |
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| YANG Hong,WANG Shun-chun,WANG Zheng-tao,HU Zhi-bi. Structural analysis of polysaccharides from Dendrobium candidum[J]. Chinese Pharmaceutical Journal, 2004, 39(4): 254-255 |
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| Authors: | YANG Hong WANG Shun-chun WANG Zheng-tao HU Zhi-bi |
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| Affiliation: | 1.Institute of Chinese Materia Medica,Shanghai University of Traditional Chinese Medicine,Shanghai 200032,China;2.Department of Pharmacognosy,China Pharmaceutical University,Nanjing 210038,China |
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| Abstract: | OBJECTIVE To characterize the chemical structures of DT2 and DT3, two homogeneous polysaccharides from Dendrobium candidum. METHODS Molecular weights were estimated by HPLC. Sugar composition, methylation, partial hydrolysis and 13C-NMR were used to elucidate the structural features of DT2 and DT3. RESULTS The molecular weights were estimated to be 7.4×105 and 5.4×105. Sugar analysis indicated that DT2 and DT3 were mainly composed of glucose, galactose, xylose, arabinose and mannose in molar ratios of 5.9 :l.0:1.0:0.8:0.5 and 7.9:1.3:1.0:0.5:0.7, respectively. Methylation analysis and NMR data showed that the main chains of DT2 and DT3 were composed of 1,4 linked α-D-Glc. CONCLUSION Polysaccharides DT2 and DT3 were isolated from D. candidum for the first time. |
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| Keywords: | Dendrobium candidum polysaccharides chemical structure |
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