含有溴的

In this thesis, The structrual modification is focused on theα-position of the pyrrole ring of hymenialdisine.

由于hymenialdisine含有一个不稳定的溴原子取代基，并不具备作为药物分子所要求的稳定结构，同时，该化合物对激酶的抑制缺乏选择性。

The synthetic application of the multi-stereocenter β-bromo aldehyde 7a with quaternary carbon was demonstrated in the total synthesis of Amaryllidaceae alkaloid Lycoramine.

四、含有季碳的多立体中心β-溴代醛7a在天然石蒜科生物碱-Lycor--amine全合成中的应用研究。

This paperindicated that it was good for condensation reaction when benzene-ring bearingelectron-attaching groups. It also showed that and the 6-hydroxyl group could bereacted with acyl halide, haloid ether and halo alkene, but not with halo alkane. It wasnot only the first time to find that the reaction product of D-mannitol and aromaticaldehyde is tri-condensation derivatives, but also the first time to obtain thep-phthaldehyde-sorbitol derivatives containing eight hydroxyl groups.

研究发现：苯环上有吸电子基团时对缩合反应有利；多元醇缩醛衍生物6-羟基除与酰氯反应外，也能和卤代酸酯、溴代烯反应，但不与卤代烷反应；首次发现D-甘露醇与醛反应主要得到三缩合物；首次合成了含有8个羟基的对苯二甲醛和山梨醇的缩合物。

Silver nanoparticles with average particle size ranging from 2 to 131nm were manipulatively synthesized starting from silver nitrate using 10 kinds of different functional group-containing organic modifiers, such as polyvinylpyrrolidone, tween-80, sodium dodecyl sulfate, sodium polyacrylate, polyethylene glycol, D-sorbitol, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, polyvinyl alcohol, cetyltrimethylammonium bromide, at room temperature.

摘 要：选择10种含有不同官能团的有机物为表面修饰剂，如聚乙烯吡咯烷酮、吐温-80、十二烷基硫酸钠、聚丙烯酸钠、聚乙二醇、山梨醇、十二烷基磺酸钠、聚乙烯醇、十二烷基苯磺酸钠和十六烷基三甲基溴化铵等，在室温下进行了平均粒径在2～131nm范围内纳米银颗粒的控制合成研究。

Long-chain branched polyethylene was obtained using a homogeneous bianary catalyst system composed of late and early transition metal complexes,namely a mixture of bis(α-naphthalidine)-2,3-butanediimine NiBr2 and Cp* TiCl3,as catalyst precursors in the presence of MAO.

合成了一种后过渡金属镍化合物 [二- N ，N′--2 ，3-丁二亚胺镍二溴化物 ][C10H7—NC(CH3)C(CH3)N—C10H7]NiBr2，此化合物在MAO活化下催化乙烯聚合能得到含有末端双键的低分子量聚乙烯，即长链α-烯烃。

The structural characteristics of the ligand of the chiral Schiff base are that the ligand has phenol hydroxyl, alcoholic hydroxyl and an imine group, one to three bromine atoms are provided on the framework of double benzene nucleus, and chiral carbon is connected with the nitrogen atom of imine.

手性西佛碱配体的结构特征为含有酚羟基、醇羟基和亚胺基团，在萘环骨架上带有一至三个溴原子，手性碳与亚胺的氮原子相连。

In the synthetic work, the effect of bases, which are used as catalysts, to the reaction between the cyclic imides including polyamide and the methyl bromoacetate was studied.

在合成过程中，研究了不同的碱做催化剂对含有环状酰亚胺以及多个酰胺键的两种化合物与溴乙酸甲酯反应的影响。

Heating, ethanol precipitation, and ion-exchange chromatographies had been carried out to isolate the protein with specific stimulating activity from newborn calf liver, and [(3)H]thymidine deoxyribose/bromodeoxyuridine incorporation and carboxyfluorescein diacetate succinimidyl ester-based proliferation assay to determine the bioactivity in vitro and in vivo.

通过用加热、乙醇沉淀、离子交换层析等方法来分离新生小牛肝脏中含有特殊刺激活性的蛋白和用胸嘧啶脱氧核糖/溴脱氧尿苷联合羧基荧光素双乙酸钠琥珀酸酯为基础的扩增分析其体内和体外的生物活性。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。