鼠李糖苷

Through the study, the technical routes of kaempferitrin isolation and preparation of rhamnose ware set up. It also laid the foundation for following research.

通过以上研究，同时建立了山柰苷提取分离和鼠李糖制备的工艺路线，有效的利用了光叶小腊树资源，也为其后续研究奠定了基础。

And also inspected the preparation of rhamnose by hydrolyzes kaempferitrin.

同时考察了水解山柰苷和芦丁制备鼠李糖的工艺。

Rutin was extracted and refined from Sophora japonica L. And rhamnose was prepared by the hydrolysis of kaempferitrin and rutin.

从槐米中提取并精制芦丁，并对所得的山柰苷及芦丁分别进行水解，制备得到了鼠李糖。

Their structures were identified by chemical and spectral analysis. RESULTS Five compounds were isolated and identified as stigmasterol 3-O-β-D-glucopyranoside, 20β-hydroxy-ecdysone,β-L-thymidine, pennogenin 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside and pennogenin 3-O-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-[α-L-rhamnopyranosyl-(1→2)-]-β-D-glucopyranoiside.

结果 分离并鉴定了5个化合物，分别是Δ5，22-豆甾醇3-O-β-D-葡萄吡喃糖苷，20β-羟基蜕皮激素，β-L-脱氧胸腺嘧啶苷，偏诺皂苷元3-O-α-L-鼠李吡喃糖基－(1→2)-β-D-葡萄吡喃糖苷和偏诺皂苷元3-O-α-L-鼠李吡喃糖基－(1→4)-α-L-鼠李吡喃糖基－(1→4)-［α-L-鼠李吡喃糖基－(1→2)-］-β-D-葡萄吡喃糖苷。

Result:Eight compounds were elucidated as β amyrin palmitate, taraxastery acetate, luteolin 7 O α L rhamanopyranosyl (1→2)β D glucopyranoside,luteolin 7 O β D glucopyranoside, triacontanic acid,β sitosterol, stigmasterol and stigmast 7 en 3β ol.

结果 ：从全草中分离得到 5个化合物，β香树脂醇棕榈酸酯，蒲公英醇乙酸酯，木樨草素 7 O α L 鼠李糖基(1→ 2 )β D 葡萄糖苷，木樨草素 7 O β D 葡萄糖苷，三十碳酸；1个混合物，β谷甾醇、豆甾醇、豆甾 7 烯 3β醇。

Compound 9 is glycosylated in the presence of TMSOTf with rhamose-derived trichloroacetimidates to provide target trisaccharide Saponin 1, oleanolic acid 3-yl-2,4-di-O-a-L-rhamnopyranosyl -p-D-glucopyranosideCoumpond 18 is prepared with oleanic acid and Bromide 11 through phase-thansfer catalysis glycosylation manner.

三糖皂苷Saponin 1是以葡萄糖齐墩果酸皂苷为起始原料，用BBTZ(1-苯甲酰苯并噻唑)选择性保护葡萄糖3′，6′-羟基得到化合物9，然后以化合物9为糖基受体，进行一步糖苷化可以在化合物9的2′，4′-羟基上同时引入两分子鼠李糖，最后脱掉所有的保护基得到目标化合物Saponin1。

In order to reduce side effects of anthrone L-rhamnopyranosides, the introduction of Ac group into methylene proton at C-10 of anthrone was carried out.

为有效地降低蒽酮鼠李糖糖苷的心脏毒性，设计合成了系列在其C-10亚甲基引入Ac的衍生物。

Sixteen compounds were separated from 80% ethanol extract of Plant A, they were:-lariciresinol,-isolariciresinol,-isolariciresinol 9-O-β-D-glucopyranoside, tanegoside B, apiginin, apigenin 7-O-β-D-glucoside, apigenin 7-O-β-neospheroside, quercetin 3-O-β-D-glucopyranoside, 1, 7-dihydroxy-3, 4-dimethoxyxanthone, 3-O- [α-L-rhamnopyranosyl (1-4 ] -β-D-glucopyranoside-(25S)-5β-spirostan-3β-ol , 3β-O-D-glucopyranoside quinovic acid, mangiferin , 3'-p-hydroxybenzoyl-mangiferin, physcion, benzenyl methanol β-D-glucopyranoside and Vanillic acid.

结果： 1。从植物A的80％乙醇提取物中共分离得到16个化合物，分别为：-落叶松脂醇、-异落叶松脂醇、异落叶松脂醇9-O-β-D-吡喃葡萄糖苷、tanegoside B、芹菜素、芹菜素7-O-β-葡萄糖苷、芹菜素7-O-β-新橙皮糖苷、槲皮素3-O-β-D-吡喃葡萄糖苷、1，7-二羟基-3，4-二甲氧基-口山酮、菝葜皂苷元-3-O-[α-L-吡喃鼠李糖基（1-4）]-β-D-吡喃葡萄糖苷、喹诺酸3β-O-D-葡萄糖苷、知母宁、3′-对羟基苯甲酸-知母宁、大黄素甲醚、苯甲醇-β-D-吡喃葡萄糖苷、香草酸。

Main monosaccharide were Arabinose, Xylose, Mannose, Glucose and Galactose. The structure of SPG was studied by IR and alkaline β-elimination reaction. It was found that:(1) SFG contains α-glucosidic bonds;(2) the type of the glucosidic bonds was pyranose,(3) the protein was covalently linked with the carbohydrate by 0-glycosyl linkage.

气相色谱分析表明甘薯糖蛋白中糖链部分含有鼠李糖、阿拉伯糖、甘露糖、葡萄糖、半乳糖；红外光谱和汗消去反应表明：甘薯糖蛋白中含有α-糖苷键，糖苷键类型主要为吡喃型；糖与蛋白的肽链之间的连接点类型是O-糖肽键。

The best characterized member of this latter group is a rhamnose-glucose-IAA glycosidic complex.

后一类物质中最有特征性的成份是鼠李糖-葡萄糖-IAA糖苷复合物。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。