对映的

When bottom object concentration is 6-12g/L, different mole ratio cyclodextrin is added according to different bottom object, the percent conversion of bottom object aromatic ketone is 50-99and antipode excess value of outcome optically active alcohol is 75-99D:工作文件发明补译2433biba_补13_sunquansheng(100件)2433biba_补13_sunquansheng(100件).txto the product incorporating the invention has high practical application worthiness.

利用本发明在底物浓度为6～12g/L时，环糊精用量根据底物的不同选择不同的摩尔比加入，此时底物芳香酮的转化率为50％～99％，产物光学活性醇的对映体过量值为75％～99％，具有较高的实际应用价值。

Endothelin is Associated with exercise-induced Bronchoconstriction-Effects of Endothelin Antagonist on the Bronchoconstriction Elicited by Isocapnic Hyperpnea in Guinea Pigs and Clinical Experiment of 何翔;梁永杰;朱晖;汪蜀;郭忠良;陶梦非;尹琦;蔡映云;Zhuang-Hua Rui

MR功能成像软件的临床应用杨刚；李林·海达？盖伯乐小姐的秘密歌珊·局部热暴露对人体热反应的影响研究(2)：不均匀热环境的评价张宇峰；赵荣义·转轨时期中国城乡居民预防性储蓄比较研究―中国城乡居民消费的理论框架及实证研究陶长琪；齐亚伟

In this chapter, we report the synthesis of an alkyl imidazo lium salt supported chiral sulfonamide ligand and its use and recycling in enantiosel-ective reduction of prochiral ketones to optically active secondary alcohols.

在这里我们报道了一种离子液体接枝的磺酰胺手性配体以及在前手性酮的不对称还原反应中的应用，获得了较好的对映纯过量，实现了手性配体的回收和重复使用。

The minimal energy conformations of host-guest complexes were obtained with Tripos force field. Molecular dynamics simulations were carried out to investigate chiral molecular recognition and the distribution of hydrogen bonds. The energies of recognition system were calculated with MM+ force field as well.

首次将分子力学方法引入卟啉的手性分子识别领域的研究；用Tripos力场研究了主客体配合物最低能量构象，比较了同一主体与互为对映异构体的两个氨基酸甲酯形成的配合物的能量差异；用分子动力学模拟方法研究了手性分子识别行为及体系的氢键分布；用MM+力场研究了识别体系的能量。

In this paper,- and (5)-2,2'-diethynyl-1,1'-binaphthyl with highly stable chiral configurations were employed as structural templates, and a new type of helical cyclophane compounds-3 and-3 were synthesized in enantiopure form by the introduction of benzyl sulfone through Sonogashira coupling reaction, followed by the treatment of disulfone with lithium diisopropylamide.

基於2，2'-二取代的联萘衍生物在手性构型上高度稳定的特点，分别从光学活性的-和-2，2'-二乙炔基-1，1'-联萘结构模板出发，通过Sonogashira偶连反应导入苄基碸，然后用二异丙基氨基锂处理制得的联萘二碸成功地合成了一种新的螺旋环芳分子－对映异构体-3和-3。

Calix[4]arene is investigated most widely due to its stable conformation and easy derivatization. Among them lots of works reported the chiral calix[4]arenes can be used in enantiomeric recognition and dectection.

杯[4]芳烃因其稳定的构象和易于修饰的特点，成为研究最为广泛的杯芳烃分子，其中大量的文献报道了能够用于对映体识别和检测的手性杯[4]芳烃。

Based on the results of this report and the results of literature reports on the preferred conformation of enantiomeric 3-substituted-1, 4-benzodiazepines, a nucleophilically solvated C3 carbonium ion intermediate resulting from either a P or a M conformation is proposed to be an intermediate.

基於本文所报导的结果及文献所记述之对映异构性在C3位有取代基时的1，4-苯并二氮类的倾向构象，设想提出所观察之现象是由正或负构象所致的一个亲核性经溶剂化的C3阳碳离子为中间体。

Both three-dimensional chiral compounds have intriguing chiral channels, which are built up of homochiral intertwined double helices. The circular dichroism spectra of 1 and 2 in water have shown they are stable in solution, which document they will be significantly useful in asymmetric catalysis and chiral medicine.

以Keggin结构多金属氧酸盐为建筑单元，通过手性的铜-脯氨酸配合物作为模板剂构筑了2个基于Keggin结构多金属氧酸盐的3D纯手性化合物，化合物1和2是一对对映体，代表了世界上第一例3D手性多酸化合物，具有由同手性螺旋缠绕形成的手性孔道，水溶液中的圆二色谱表征这个3D手性化合物可稳定存在，显示这个物种可以在不对称催化及手性药物方面有潜在的巨大的应用价值。

Polyethylene glycol ethers of alkyl alcohols having the general formula CH3(CH2)xCH2(OCH2CH2)nOH wherein x is 8 to 20 (of which ceteareth-20, steareth-20 and steareth-100 are preferred), poloxamer 185, poloxamer 407, N,N-dimethyl dodecylamine N-oxide, and mixtures thereof, are employed to increase follicular delivery and/or follicular residence time of certain water soluble ornithine decarboxylase inhibitors of which 2-2,5-diamino pentanoic acid and its pharmaceutically acceptable salts, hydrates, optical enantiomers and racemic mixture are preferred.

使用通式为CH3(CH2)xCH2(OCH2CH2)nOH的烷基醇的聚乙二醇醚，其中x为8-20(其中鲸蜡硬脂醇醚-20、硬脂醇醚-20和硬脂醇醚-100是优选的)、poloxamer 185、poloxamer 407、N，N-二甲基十二烷胺N-氧化物及其混合物来提高某些水溶性的鸟氨酸脱羧酶抑制剂的毛囊传输和/或毛囊停留时间，优选的抑制剂是2--2，5-二氨基戊酸及其药学上可接受的盐、水合物、光学对映异构体及外消旋混合物。

Nevertheless, the yield of pinacol was also strongly affected by the steric environment surrounding the carbonyl group. The pinacol coupling of aromatic aldehydes has been achieved with high yields under such a condition. However, the diastereose-lectivities of pinacols were not satisfying. Unfortunately, the ketones and most aliphatic aldehydes appeared inert under the same reaction conditions.

然而， 呐偶合反应的产率受到羰基周围环境的立体位阻影响较大，在此条件下，锌粉能有效地促进芳香族醛类化合物进行水相呐偶合反应，得到的呐醇产率高，但非对映异构体选择性差，而脂肪族醛类化合物得到的呐醇产率较低，在同样的条件下，酮类化合物不能顺利进行呐偶合反应。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐