糖甙

The bioactive screening on aldose reductase, nitric oxide synthetase, liver cancer Bel-7402, cavum oris epithelioma KB and colon cancer HCT-8 showed that paeoniflorin inhibited the nitric oxide synthetase by the rate of 83. 4% at the concentration of 5μg/ml, and paeoniflorigenone inhibited the colon cancer HCT-8 cells by the rate of 83. 2% at the concentration of 5μg/ml.

通过醛糖还原酶、NO合酶、肝癌Bel-7402、口腔上皮癌KB以及结肠癌HCT-8五种模型的生物活性筛选表明，在51μg／ml的浓度下，芍药甙对NO合酶的抑制率达83.4％，芍药甙元对结肠癌HCT-8细胞株的抑制率达83.2％，有较好的抑制作用。

Saponin composition of common sugar glucose, galactose, rhamnose, arabinose, xylose and glucuronic acid, galacturonic acid, etc., are often associated with C3 Sapogenins-OH-bit connection into effect.

组成皂甙的糖常见的有葡萄糖、半乳糖、鼠李糖、阿拉伯糖、木糖及葡萄糖醛酸、半乳糖醛酸等，常与皂甙元C3位的-OH连接成甙。

The monosaccharide are made up of rhamnose, glucose, mannitose, galactose and xylose. It offers foundation for boosting biological activities by hydrolyzing saponins.

硅胶薄层层析证明刺嫩芽皂甙的单糖可能由鼠李糖、葡萄糖、甘露糖、半乳糖和木糖组成，这为酶水解提高刺嫩芽皂甙活性研究提供了依据。

The common building block of them was synthesized by firstly glycosylation of an appropriately protected glucose with diosgenin, then introduction of a rhamnosyl residue to the 2-OH at Glu, finally freeing the 4-OH at Glu by selectively benzoylation of 6-OH.

我们先将适当保护的葡萄糖接在薯蓣甙元上，然后选择性地保护葡萄糖的 3 位羟基，在 2 位上引入一个鼠李糖，接下来选择性地保护葡萄糖的 6 位羟基，得到了上面三个皂甙的共同合成子。

The common building block of them was synthesized by firstly glycosylationof an appropriately protected glucose with diosgenin, then introduction of a rhamnosyl residue to the 2-OH at Glu, finally freeing the 4-OH at Glu by selectively benzoylation of 6-OH.

我们先将适当保护的葡萄糖接在薯蓣甙元上，然后选择性地保护葡萄糖的3位羟基，在2位上引入一个鼠李糖，接下来选择性地保护葡萄糖的6位羟基，得到了上面三个皂甙的共同合成子。

On the basis of spectral analysis, these compounds were identified as Kaempferol , Kaempferol-3-O-β-D-glucopyranoside , Kaempferol-3-O-β-D-galactopyranoside, Quercetin , Quercetin-3-O-β-D-arabinopyranoside, Quercetin-3-O-β-D-galactopyranoside, gallic acid, methyl gallate-4-O-β-D- galactopyranoside, caffeicacid, methyl caffeate, 4-cafeoyl-(3"a, 4"a, 5"β)- trihydroxyquinic acid, 3"-cafeoyl-(3"a, 4"P, 5"P )-trihydroxyquinic acid methyl ester, 5"-cafeoyl-galactonic acid , pumiloside, loganic acid , 5R,6S,7E-megastima-3-on-7-en-9-ol 9-O-β-D-glucopyranoside. 2a, 3β-dihydroxy-oleanoic acid , 2a, 3β, 23-trihydroxy-oleanoic acid, 3a, 6a-dihydroxy-oleanoic acid, 3β-hydroxy-ursoic acid, 2a, 3a, 23-trihydroxy-ursoic acid , 2a, 3β, 23-trihydroxy-ursoic acid, 2β, 3β, 19a -trihydroxy-ursoic acid, 2a , 3β, 19a -trihydroxy-ursoic acid-28-O-β-D-glucopyranoside , 2a. 3a, 19a-trihydroxy-ursoic acid-28-O-β-D-glucopyranoside, 2a, 3a, 19a, 23-tetrahydroxy-ursoic acid, 1a, 3a, 19a, 23-tetrahydroxy-ursoic acid-28-O-β-D-glucopyranoside , 3a, 19a, 23-trihydroxy-ursoic acid.

从珙桐中分离鉴定得到了28种化合物，它们分别是：山奈酚，3-O-β-D-吡喃葡萄糖基-山奈酚甙，3-O-β-D-吡喃半乳糖基-山奈酚甙，槲皮素，3-O-β-D-吡喃阿拉伯糖基-槲皮素甙，3-O-β-D-吡喃半乳糖基-槲皮素甙，没食子酸，4-O-β-D-吡喃半乳糖基-没食子酸甲酯，咖啡酸，咖啡酸甲酯，4-咖啡酰基-(3&α，4&α，5&β)-三羟基鸡纳酸，4-咖啡酰基-(3&α，4&β，5&β)-三羟基鸡纳酸甲酯，5'-咖啡酰基-半乳糖酸，pumiloside，loganic acid，5R，6S，7E-megastima-3-on-7-en-9-ol9-O-β-D-glucopyranoside，2α，3β-二羟基齐墩果酸，2α，3β，23-三羟基齐墩果酸，3α，6α-二羟基齐墩果酸，3β-羟基熊果酸，2α，3α，23-三羟基熊果酸，2α，3β，23-三羟基熊果酸，2β，3β，19α-三羟基熊果酸，2β，3β，19α-三羟基熊果酸-28-O-β-D-吡喃葡萄糖甙，2α，3α，19α-三羟基熊果酸-28-O-β-D-吡喃葡萄糖基甙，2α，3α，19α，23-四羟基熊果酸，2α，3α，19α，23-四羟基熊果酸-28-O-β-D-吡喃葡萄糖基甙，3α，19α，23-三羟基熊果酸。

First Total Synthesis of OSW-1, an Exceptionally Potent Antitumor Saponin OSW-1, an acylated disaccharide steroidal saponin isolated by Sashida in 1992 from a plantnamed Ornithogalum saundersiae without any medicinal background, was one of the most potent antitumor agent to date with the cytotoxicity activity as 100 times potent as many other anticancer drugsclinically used.

一、极强抗癌活性皂甙——虎眼万年青皂甙(OSW-1)的首次全合成：虎眼万年青皂甙OSW-1是一个新近由日本化学家从非药用植物Ornithogalumsaundersiae中分离出来的具有极强抗癌活性的酰化二糖甾体皂甙，它对多种癌细胞的毒性比临床用药高100倍以上。

Furthermore, proton singlets of Fmoc group were treated as internal standard because of their station in both starting material and product.

用HR／MAS NMR分析技术不仅跟踪优化了固相羟基氨基酸的糖基化反应条件，而且选择固载在树脂上的糖基化Nα-Fmoc保护羟基氨基酸〓H NMR中最低场，且分辨好的Fmoc保护基信号做为内标，糖上乙酰基的积分面积为标准直接定量了键合在Tenta Gel S NH〓树脂上氨基酸甙化的产率。

Researcher the retrieval spends a green vegetable from the black tree Mei, and analyze to spend a green vegetable among them-3-match of the Yun fragrant sugar Mao(C-3-R) mechanism, study an its action for leukemia cell.

研究人员从黑树莓中提取花青素，并分析其中花青素-3-芸香糖甙(C-3-R)的搭配机制，研究其对血癌细胞的作用。

Objective To study the hair cells damaged in the organ of corti and repairing after aminoglycoside treatment.

目的 研究氨基糖甙类抗生素引起哺乳类动物Corti器损伤及损伤后的修复情况。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。