糖基

Firstly, one of the two key intermediates, tetrahydrofuran fragment with aterminal alkyne 27, was prepared from D-glucose utilizing a multiple-step sequencedeveloped by us earlier.

在本组过去的工作基础上，我们从葡萄糖出发，获得了含有四氢呋喃环的炔化合物27。同时，从木糖及炔丙醇出发，获得了一端为γ内酯环的烯基碘化合物14，即C1-C13片断。

Methods The antianaphylaxis activities of myricetin was measured by passive cutaneous anaphylaxis, dextran-induced itch and DNCB-induced delayed type hypersensitivity in mice,respectively.

采用小鼠同种、异种被动皮肤过敏反应、右旋糖酐致小鼠全身瘙痒反应和2，4-二硝基氯苯所致小鼠耳廓皮肤迟发型超敏反应实验，探讨杨梅素的抗过敏作用。

OPN is a secreted glycoprotein that is rich in aspartate and sialic acid residues and contains several functional domains.

OPN是富含天冬氨酸和唾液酸残基的可分泌糖蛋白，包含有多种功能域。

Supplied with different forms of carbon compounds to the bacteroid suspension as respiratory substrates investigated in Warburg respirometer , it showed that sucrose was nonutilizable and its hydrolysates , glucose and fructose were util .

试验以多种碳源供类菌体作呼吸基质，果表明蔗糖不能被利用，水解成葡葡糖和果糖后的利用率低。

This method can be used in the solid-liquid two phase reaction, widening the application of α-tetra benzyl bromoglycose .

该方法拓宽了α-四苄基溴代葡萄糖和相转移催化法制备糖苷类化合物的应用范围。

Examples of humectants include lactic acid, urea (the urea found in creams is synthetically produced by combining one molecule of carbon dioxide with two molecules of ammonia and not obtained from urine), hyaluronic acid (able to retain 1000 times its weight of water), propylene glycol, glycerin, sorbitol, gelatin, lecithin, sodium pyrrolidone carboxylic acid, and butylene glycol.

常见的湿润剂有乳酸，尿素（面霜里的尿素来自于二氧化碳和氨分子的合成而不是从尿中提取的），透明质酸（能保持自身成分1000倍的水分），丙二醇，丙三醇，山梨糖醇，明胶，卵磷脂，吡咯钠，羧基酸和丁二醇。

The result shows that this monosaccharide has a carboxyl group on C6, an amino group on C2 and also has its own optical rotation and melting point, which are just in accordance with the results reported.

结果表明，该单糖在C6连有羧基，C2连有氨基，具有特定的比旋光度和熔点特征，与报道的结果相一致。

It is possible to preparing neutralizing MAb which target to active region of Stx2 by synthetical B cell epitope peptides. At present, the crystal structure of the compound of Stx2 and its ligand adenines has been resolved, and the active site of Stx2 is definite, which is the seventy-seventh amino acids, Ganimalon, of Stx2 A1 fragment.

Stx2通过B亚基与受体Gb3结合后，进入细胞，在弗林蛋白酶(一种钙敏感的丝氨酸蛋白酶)作用下A亚基被裂解为A1和A2两个片段，A1片断经内质网进入细胞质暴露毒性活性位点―A1片段发挥N-糖苷酶活性，导致真核细胞蛋白质合成的终止，最终导致细胞的死亡。

Hard candy is one white sugar, starch-based material syrup taste of a hard, brittle candy; Hard candy is candy sandwich containing rolls of hard candy; White sugar are creamed candy, starch syrup, oil and dairy products mainly made of materials, protein not below 1.5% fat not less than 3.0%, has a special flavor and creamed Coke flavor candy; gel candy is edible glue, white sugar and starch syrup material mainly made of soft texture of candy; the surface is polished candy Bright solid candy; gum is white sugar candy and plastic-based material can be made of materials or blowing chewing candy; inflatable of sugar candy is within the finer uniform bubble candy; Pressed candy after granulation, bonding, forming the suppression of candy.

其中硬质糖果是以白砂糖、淀粉糖浆为主料的一类口感硬、脆的糖果；硬质夹心糖果是糖果中含有馅心的硬质糖果；乳脂糖果是以白砂糖、淀粉糖浆、油脂和乳制品为主料制成的，蛋白质不低于1.5%，脂肪不低于3.0%，具有特殊乳脂香味和焦香味的糖果；凝胶糖果是以食用胶、白砂糖和淀粉糖浆为主料制成的质地柔软的糖果；抛光糖果是表面光亮坚实的糖果；胶基糖果是用白砂糖和胶基物质为主料制成的可咀嚼或可吹泡的糖果；充气糖果是糖体内部有细密、均匀气泡的糖果；压片糖果是经过造粒、黏合、压制成型的糖果。

As support, Agarose can benot only used in normal condition, but also in denaturalization (for example, 6 mol/Lhydrochloric acid carbamidine or 8 mol/L urea). Herein, the preparation of IMACmatrixes were conducted using agarose as support, carboxymethylated aspartate as chelating ligand and Co~(2+) and Ni~(2+) as chelating center ions.

本实验用琼脂糖作为基质，选用四配位，与金属离子有较强作用力的羧甲基天冬氨酸为配基，以Co~(2+)、Ni~(2+)作为螯合金属离子，合成了一系列金属螯合亲和色谱填料，并对其蛋白质分离性能进行了研究。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。