查询词典 amino-isovalerianic acid

In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.

第二部分，我们研究了α，α-二氟苄基卤类化合物的亚磺化脱卤反应、产物的转化及全氟烷基亚磺酸盐与芳环化合物的全氟烷基化反应，发现全氟苄基碘或溴及α，α一二氟苄基溴在保险粉等亚磺化脱卤试剂引发下可生成相应的亚磺酸盐；全氟苄基亚磺酸盐与氯气或溴反应可生成全氟苄基磺酰氯或磺酰溴；在烯烃存在下，全氟苄基碘则与烯烃发生加成反应，生成相应的1：1加成产物；在三价醋酸锰的作用下，部分芳香化合物如茴香醚，二甲氧基苯，吡啶，喹啉等可以和过量的全氟烷基亚磺酸盐发生双全氟烷基化反应，反应表现出一定的区域选择性，产率良好。

The non-volatile taste components in these mushrooms included soluble sugars, free amino acid and flavor 5'-nucleotides. Soluble sugars included arabitol, mannitol, glucose and trehalose and were found in the highest amount in P.

酸。经分析后发现，此四种菇类子实体所含的可溶性糖，包含有阿拉伯糖、甘露糖醇、葡萄糖、肌醇和蕈糖，而可溶性总糖含量则以日本蚝菇所含者（138.75 mg/g）较高。

This ORF encodes a 640-amino-acid polypeptide which shares 95%, 71%, 71%, 70% and 32% homologies to p73 of Barbul barbus, Mus musculus, Homo sapiens, Cercopithecus aethiops and Mya arenaria, respectively.

此ORF可转译出640个胺基酸，经由比对结果发现，斑马鱼的p73胺基酸与其它物种的相似度为：与人为71﹪，与猿猴为70%，与老鼠为71%，与鲶鱼为95%，与蜗牛为32%。

Here the authors examined the egg case silks from the orb web spider, Argiope amoena and Nephila clavata by the automatic amino acid analyzer, SEM, FTIR and electric single-fiber tensile apparatus with the goal of expanding our understanding of the relationship between the structure, mechanical performance and biological function of these unique biomaterials.

作者采用氨基酸自动分析仪、傅立叶转换红外光谱仪、扫描电镜和电子单纤强力仪对悦目金蛛和棒络新妇的卵袋丝进行了物理化学结构表征与力学性能的研究，结果表明两种蜘蛛卵袋均由微米级柱状腺丝、大壶状腺丝、亚微米级或纳米级葡萄状腺丝构成。

A study has been made of the possible use of o-amino-benzene arsonic acid as a reagent for qualitative detection of small amounts of gold.

本文报告用隣氨基苯砷酸作檢定与测定少量金的結果。

Aspartame is made with two amino acids: phenylalanine, and aspartic acid.

阿斯巴甜是两种氨基酸：丙氨酸、天冬氨酸。

From the results, it seems that this new macrocyclic ligand is able to bind three different amino acids with selectivity in aqueous solution, and the strength of binding is of the order lysine＜glycine＜aspartic acid.

通过合成金属配合物，在结构和功能上模拟生物酶的活性中心或结构中心是研究酶的结构与活性关系的重要手段，也是生物无机化学的一个主要研究方向。

One of the major problems,however,remains the poor solubility and membrane permeation of pepstatin, as well as its lack of selectivity among aspartyl proteases.The amino acid statine can mimic the tetrahedral transition-state of amide bond hydrolysis but cannot itself be hydrolyzed by the enzyme.

分子中含有两个非天然氨基酸statine能模拟天冬氨酸蛋白酶底物活性部位的四面体水解过渡态，且本身不易被切割，通过氢键和酶的天冬氨酸残基结合。

Pepstatin,which contains the novel amino acid statine,is a natural pentapeptide isolated from natrue product.It is a good inhibitor of most aspartyl proteases with a K_i in the nanomolar range.

从天然产物中分离得到的Pepstine对大多数天冬氨酸蛋白酶的抑制率达纳摩尔级，但其选择性差、溶解性弱。

In comparison with the reported corresponding sequences, the putative amino acid sequence shares high homology with assimilatory nitrate reductase of other microalgae, with identity 78% to Dunaliella tertiolecta, 60% to Volvox carteri, 58% to Chlamydomonas reinhardtii, and 50% to Chlorella vulgaris, respectively.

2.3 杜氏盐藻NR基因原核表达载体在大肠杆菌中的表达和功能鉴定(1)pMAL-NR-2组大肠杆菌SDS-PAGE结果显示：在140kDa左右出现一条特异性条带，分子量与MBP-NR融合蛋白相符（BMP+NR=42.5kDa+99.5kDa=142kDa），在IPTG（0.15mmol/L）37℃诱导时，该蛋白量占全菌蛋白的21.06％；对照组无此特异带。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。