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optically相关的网络例句

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In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.

为了发展一套实用的合成方法,我们首先制备於苯环上具有不同种取代基的苯乙醯胺,接著透过Bischler-Napieralski反应进行分子内合环,并利用钌金属对亚胺中间体进行不对称的还原反应,建立出产物中唯一的光学活性中心,最后再利用Heck反应连结两个苯环,就可以顺利得到具有光学选择性的阿朴吩类天然物。

Optically active axially dissymmetric binaphthyl derivatives have been extensively used as excellent chiral ligands in asymmetric catalysis and chiral recognition.

光学活性的联萘衍生物以其独特的立体化学性质作为优异的C2轴手性诱导源,已被广泛地应用到不对称催化反应和手性识别中。

In order to synthesize the functional polyquinolines (such as proton conducting polyquinolines and optically active polyquinolines) and investigate structure-property relationships, polyquinolines and polyanthrazolines containing isomeric pyrrole units or 1, 1'-binaphthyl in main chain were synthesized and their properties were studied.

建立了二乙酰吡咯的合成方法;合成并表征了四种二苯酰基-二氨基单体和五种新型的含吡咯基或联萘基的二乙酰基单体;并对部分合成方法进行了改进,简化了实验步骤,提高了产率。

From the optically active 2, 2'-dihydroxy-1,1 '-binaphthyl, through esterification, Kumada coupling, bromization, hydrolization and Wittig elimination reaction, 2,2'-diethynyl-1,1'-binaphthyl was obtained.

从光学活性的2,2'-二羟基-1,1'-联萘出发,经过酯化,Kumada偶联,溴化,水解和Wittig消除反应五个步骤,成功地获得了具有单一手性的的2,2'-二乙炔基-1,1'-联萘。

An inclusion complex -BINOL--Omeprazole or -BINOL--Omeprazole was first obtained from racemic omeprazole with chiral host --or --2, 2'- dihydroxy-1, 1'-binaphthyl in high selectivities, and thus both optically pure enantiomers of omeprazole were prepared as syrup with more than 99% enantiomeric excess, the overall yields of both two enantiomers are more than 60%.

首次发现光学纯R--或s--联二萘酚高效识别并包结R--或S--奥美拉唑,形成包结络合物的现象,并首次将包结拆分法应用于手性苯并咪唑类抗溃疡药物的制备,用一种构型的光学纯联二萘酚直接拆分奥美拉唑,可同时得到油状或糖浆状e.e。

Three kinds of optically active pnthalocyanine derivatives modified with chiral 2'-methyoxy-1,1'-binaphthyl; chiral binathyl crown ether; chiral 6,6'-didodecyl- 1,1'-binaphthyl crown ether, have been synthesized and characterized, respectively.

本论文以手性联萘、手性联萘冠醚、冠醚等功能性基团为化学修饰基元,分别合成了三类光学活性酞菁衍生物和两类共轭聚合物,对它们的组装行为以及某些光、电功能性进行了研究。

A series of novel chiral aminophosphine ligands with binaphthyl backbone and partially reduced binaphthyl backbone were synthesized from optically pure NOBIN and H〓-NOBIN respectively. The effects of binaphthyl backbone and substitutes at the phosphorous atom on Pd (0)-catalyzed allylation of racemic 1, 3-dipheylprop-2-en-1-yl acetate with dimethyl malonate were systematically investigated.

从NOBIN出发合成了一系列膦上含有不同取代基的氮膦配体MAPs以及含有被部分还原的联萘骨架的氮膦配体H〓-MAPs,将此两类配体运用于钯催化的乙酸1,3-二苯基烯丙基酯与丙二酸二甲酯的反应中,考查了膦上取代基和配体骨架对反应的影响。

Optically active cyclophane s, such as helical molecules and three-dimensional, cagelike cyclophanes have been the subject of extensive investigation from the standpoints of structural chemistry and material science.

本论文在大量的文献调研和本实验室过去研究结果的基础上,设计了由2,2'-二取代-1,1'-联萘和2,6-二取代吡啶,1,4-二取代苯,4,4'-二取代联苯三种不同连接桥通过炔键链接构筑的拓扑有趣的光学活性环芳化合物-四联萘笼状分子。

X9313U-WS Pinout: The coupler consists of a AlGaAs LED that is optically cou- pled to a dielectrically isolated photodiode array which drives two series connected high voltage MOS transistors.

X9313U-WS引脚说明:该耦合器由一个砷化铝镓发光二极管是光凑发光二极体为介质隔离光电二极管阵列的驱动两个串联的高压MOS晶体管。

Optically active β,δ-dihydroxy esters have been widely used in the synthesis of natural products, polyol fragments, and chiral drugs.

具有光学活性的β,δ-二羟基酯已经在天然产品、多羟基化合物以及手性药物的合成中得到了广泛的运用。

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推荐网络例句

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化,采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。

The latest results are published online January 13 in the Journal of the National Cancer Institute. They come from a case–control study that involved 459 cases,"which, for the rarity of this cancer, is a very big study," Dr. Stang said.

Stang医师表示,这项最新的研究结果线上发表在1月13日的国家癌症机构期刊上,研究来自一项收纳459个病例的病例控制研究,这是一项非常大的研究。