它们都是手性分子，属于外消旋体。
同时也论述了氨基酸消旋的反应机理。
发现旋光基质有外消旋作用。
Racemization is found with optically active substrate substrates.
发现旋光基质有外消旋作用。
同时探讨了消旋过程的机理。
指出了内消旋体消旋原因传统解释的不合理性。
For the reason why optical activity of mesomer is counteracted classical answer was not convincing.
本文综述了采用各种膜拆分外消旋体的研究进展。
This article reviews some kinds of resolution methods of raceme based on membrane processes.
外消旋体拆分是获得单一手性化合物的重要途径。
Raceme separation is the main rout for preparation of pure enantiomers.
对外消旋体进行拆分是获得手性药物的重要方法。
Significant progresses in developing the techniques of chiral resolution offer possibilities in the preparation of new chiral compounds.
目的建立盐酸消旋山莨菪碱注射液细菌内毒素检查的方法。
OBJECTIVE to establish a method for bacterial endotoxins test of Raceanisodamine Hydrochloride Injection.
动态拆分技术是将拆分反应与现场消旋化反应相结合的技术。
Dynamic resolution technology combines the resolution with racemization in situ.
同时本论文也对拆分后的R型异构体进行转变消旋而重回收。
At the same time, this paper also split the R-isomer of racemic to change and re-recovery.
外消旋体的动力学拆分反应是制备手性化合物的重要方法之一。
The kinetic resolution of raceme is one of the important ways in the synthesis of chiral compounds.
目的：探讨消旋去甲乌药碱治疗病态窦房结综合征的作用机制。
Objective: To investigate the mechanism of higenamine in treatment of sick sinus syndrome.
提到生物催化，我们通常会想到外消旋物的动力学拆分和手性合成。
When considering biocatalysis, terms like kinetic racemic resolution or chiral syntheses immediately come to mind.
在一些动态动力学拆分中，消旋酶还可以催化对映异构体之间发生互变。
In some dynamic kinetic resolutions, racemase can be used to interconvert the enantiomers.
目前，用于拆分外消旋化合物的酶多数是水解酶，而且绝大多数为脂肪酶。
Presently, most of the catalysts used for the resolution of racemic mixtures are hydrolases, especially lipases.
有机相中应用酯化反应，酶法催化拆分消旋醇是获得光学活性醇的重要途径。
The main route for obtaining optically active alcohols is resolution of racemic alcohols catalyzed by enzyme in organic solvents by the esterification reaction.
中和温度中和速率和中和剂的碱性强弱对L-胱氨酸的消旋化反应影响极大。
The mesomeric reaction of L-cystine is greatly affected by the neutralizing temperature and rate as well as the basicity of neutral agent.
目的制备左沙丁胺醇盐酸盐，并对拆分后得到的S-沙丁胺醇进行外消旋化。
OBJECTIVE To prepare levalbuterol hydrochloride and make S-salbuterol racemized after the resolution.
萃取拆分技术适用性强、于连续拆分有望成为外消旋体拆分分离操作的先进技术。
It is hopeful that the extraction separation method will become the advanced technique for the racemates separation.
将所得聚合物用作高效液相色谱固定相，研究了它们对外消旋卡尼丁盐酸盐的拆分能力。
The prepared polymers were applied as the liquid chromatographic chiral stationary phase to test their resolution ability for racemic carnitine hydrochloride.
本文设计的摄像头消旋平台能够隔离弹体的旋转运动，使摄像头采集回来的图像清晰稳定。
The rotation eliminated platform of camera designed in this paper is able to isolate the rotational motion of missile, clearing and steading the collected images.
利用脂肪酶在有机溶剂中催化对映选择性酯化反应对外消旋薄荷醇进行了有效的光学拆分。
Optical resolution of racemic menthol has been efficiently achieved by lipase catalyzed enantioselective esterification in an organic solvent.
在许多情况下，外消旋药物中的单一对映体分别具有不同的疗效，有的甚至有相反的作用。
In many cases, racemic drug's single antipode has different curative effect, sometimes it even has adverse action.
目的观察国产外消旋聚乳酸(PDLLA)材料为细胞载体对软骨细胞吸附生长增殖的影响。
Objective To observe the effect of the poly dl lactide (PDLLA) used as cell culturing scaffold on the growth of rabbit chondrocytes.
文中对酰胺羰基化反应条件进行了优化，分离得到消旋N-乙酰基亮氨酸产率为66.4%。
The amidocarbonylation reaction conditions were optimized and 66.4% isolated yield of racemic N-acetylleucine were obtained.
从螺旋理论看，芳香轮烯和非芳香轮烯都是内消旋体和外消旋体的混合物，故都不呈现旋光性。
In the light of the helix theory, aromatic annulenes and non-aromatic annulcncs are all the mixture of the mesomer and raceme, so they haven't opticity activeity.
从螺旋理论看，芳香轮烯和非芳香轮烯都是内消旋体和外消旋体的混合物，故都不呈现旋光性。
In the light of the helix theory, aromatic annulenes and non-aromatic annulcncs are all the mixture of the mesomer and raceme, so they haven't opticity activeity.
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