连氮基

In order to improve their water solubility, 4"-fatty amido-3"-sodium carboxylate azobenzene-4-sodium sulfonates were synthesized. They are azo compounds with two hydrophilic groups of carboxyl and sulfonyl. They decrease the surface tension in dilute solution slowly, and show some surfactivity, but are not surfactants. The probable reason is their relative strong hydrophile. Furthermore, their colors are not fresh and far from our destination.

为了改善其水溶性，改用对氨基苯甲酸为原料合成了4′-脂肪酰氨基-3′-羧酸钠偶氮苯-4-磺酸钠盐，以偶氮结构为主的亲水基团上连有羧酸基和磺酸基两个亲水性较强的基团，但可能由于其亲水性太强，在稀溶液中只能缓慢地降低溶液的表面张力，具有一定的表面活性，但不是表面活性剂，而且颜色不鲜艳，距离我们的目标较远。

One class is CAAX-mimetic compounds with an imidazolyl residue on one end and a carboxylic group on the other connected by benzodiazepine scaffold at different positions.

连有咪唑基的苯并二氮杂草化合物，以苯并二氮杂草-2-酮为分子骨架，7位连接含有咪唑基的侧链，1位或3位连接含羧基或酯基的侧链。此类化合物模拟了CAAX配体。

Herein, we synthesized six metalloporphyrins linked with stable nitroxyl radials, and evaluated their catalytic activity for the oxidation of glycosyl sulfides to glycosyl sulfoxides.

本论文设计、合成了6个连有稳定氮氧自由基的卟啉及其铁、锰的络合物，考察了它们对糖基硫苷等硫醚类化合物氧化成亚砜的催化性能。

It was found that manganese porphyrins linked with stable nitroxyl radials could oxidize sulfides using NaOCl as the oxidant to give the corresponding sulfoxides in good to excellent yields (80-97%) with high chemoselectivity and diasteroselectivity (dr≥7:1 for glycosyl sulfoxides).

发现连有稳定氮氧自由基的卟啉锰络合物对NaOCl选择性氧化各种硫醚底物有较好的催化效果，获得了高的产率(80％～97％)、化学选择性和非对映选择性(糖基亚砜非对映异构体的比例大于7：1)。

Adjacent helical chains are racemic. The Ag atom is linked to two nitrogen atoms of the 2-pyridyl and 4'-pyridyl groups from two different 2,4'-bpy ligands as well as to the oxygen atom of the counterion. In 17 and 19, the adjacent helical chains are linked to wavy two-dimensional network structures by the nitrate counterions.

相邻的螺旋链间是外消旋的，Ag 原子与分别来自两个不同2，4'-联吡啶的2-吡啶基和4'-吡啶基的氮原子以及阴离子的氧原子配位，在配合物17和19中，相邻聚合螺旋链被硝酸根离子桥连接起来，变成了一个波浪形的二维网络结构；配合物18是首次通过无桥连配体支持的Ag ××× Ag键将相邻螺旋链连接成二维非穿插的网络结构。

As CAAX-mimetics, 1, 3-dihydro-5-phenyl-2-H-1, 4-benzodiazepin-2-one was modified by linking carboxyl groups with various carbon through N-1 and C-3, 3-(imidazol-4-yl) propion amido group with different substituents was connected at C-7; In the synthesis of bisubstrate analogues, thiocarbamido compounds was alkylated by alkyl iodide and then hydrolyzed to give alkylthiol benzoate compounds.

1，4-苯并二氮杂草-2-酮类化合物的合成过程中分别对其1、3、4和7位进行了基团变化，在1和3位连接不同长度含羧基或酯基的侧链，在7位连接不同取代的咪唑丙酰氨基。在苯甲酸硫醇酯化合物合成过程中，建立了一种硫原子连有不同长度碳链的苯甲酸硫醇酯的合成方法。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷