思茅蛇菰的化学成分研究(Ⅲ)

目的对蛇菰科植物思茅蛇菰的极性化学成分进行研究。方法采用色谱技术进行分离,以波谱等方法确定化合物的结构。结果从思茅蛇菰乙醇提取物的极性部分中分离鉴定了4个化合物甲基松柏苷(Ⅰ)、丁基松柏苷(Ⅱ)、4-O-β-D-glucopyranosyl coniferyl aldehyde(Ⅲ)、短叶苏木酚(Ⅳ)。结论化合物为一新化合物。

Chemical Constituents of Rheum tanguticum Maxim.ex Balf.

Aim To study the chemical constituents of the root and rhizome of Rheum tanguticum Maxim. ex Balf. Methods Chemical constituents were isolated and purified by many chromatographic methods, and their structures were elucidated by MS, NMR, and others. Results Twenty compounds were isolated and their structures were identified as β-sitosterol, chrysophanol, aloe-emodin, physcion, rhein, emodin, etc. Conclusion Among these compounds, 4-(4′-hydroxyphenyl)-2-butanone, 4-(4′-hydroxyphenyl)-2-butanone-4′-O-β-D-(2″-...

Alkylpolyglycoside inducing poly (butylene terephthalate) non-woven graft copolymerization of chitosan

In order to improve the wettability and biocompatibility of the poly （butylene terephthalate） non-woven （PBTNW）, the method of surface modification is used to graft copolymerization of chitosan （CS） onto the PBTNW under alkylpolyglycoside （APG） inducing. The product is thoroughly characterized with the Fourier transform infrared spectroscopy （FrIR）, the electron spectroscopy for chemical analysis （ESCA）, the thermogravimetric （TG） and the scanning electron microscopy （SEM）. It is found that chitosan is successfully grafted onto PBTNW. In addition, the water contact angles, hemolysis tests and cytotoxicity evaluation tests show an improvement in wettability and biocompatihility as a result of graft copolymerization of chitosan. So the CS-grafted PBTNW exhibits greater superiority than the original PBTNW. The CS-grafted PBTNW can be a candidate for blood filter materials and other medical applications.

污叉丝孔菌菌丝体培养物中烷基苷类化合物(英文)

目的:研究污叉丝孔菌Dichomitus squalens(Karst) Reid菌丝培养物中的化学成分。方法:在广东省鼎湖山采集污叉丝孔菌子实体,通过组织培养分离获得菌丝体,然后用多个含有YMG培养基和小麦的10.5L三角瓶进行培养。菌丝体培养物用乙醇提取和溶剂分部,正丁醇溶解部位经柱层析和高效液相色谱分离纯化,用光谱分析法鉴定化合物结构。结果:分离获得了9个化合物,分别鉴定为乙基β-D-吡喃木糖苷(1),乙基β-D-吡喃木糖(1→4)-β-D-吡喃木糖苷(2),正丁基β-D-吡喃木糖苷(3),正丁基β-D-吡喃木糖(1→4)-β-D-吡喃木糖苷(4),乙基β-D-吡喃葡萄糖苷(5),乙基α-L-呋喃阿拉伯糖苷(6),正丁基α-L-呋喃阿拉伯糖苷(7),2-去氧-D-核糖-1,4-内酯(8),2-去氧-D-核酸甲酯(9)。结论:以上化合物系首次从污叉丝孔菌菌丝体培养物中分离获得。