Racemization is found with optically active substrates.

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。

Alternatively, the compound of the invention may be prepared using optically active reactants.

另外，本发明的化合物可使用光学活性反应物来制备。

Recent progresses of the synthesis of optically active tert-leucine are reviewed in this paper.

本文综述了近年来光学活性的叔亮氨酸的合成研究及最新进展。

Chiral synthesis can be achieved by taking advantage of natural or synthetic optically active compounds.

在手性合成中利用了天然或合成的光学活性化合物。

We optimize the signal gain of the optically active crystal and apply the results to a BSO and BTO crystal.

对旋光材料优化增益，并把处理结果应用于BSO和BTO晶体。

The prospect of industrial preparation of the optically active EHB by microbial whole-cells was also discussed.

最后对生物催化制备光学活性EHB的工业化前景进行了展望。

A new optically active monomer of 4(S)—2—Methyl—4—Methoxycarbony1—2—Oxazoline has been synthesized from L—serine.

以L—丝氨酸为原料，合成了旋光纯度很高的4（S）—2—甲基—4—甲氧羰基—2—恶唑啉单体。

Novel optically active triazole derivative, process for producing the same, antifungal agent and method for using the same.

新的光学活性三唑衍生物，其制备方法，抗真菌剂和其应用方法。

By using this catalytic method, the synthesis of chiral chrysanthemic acid and other optically active compounds can be realized.

它能用于菊酸及其它化合物的不对称合成。

This article introduces the application of hydrolases, oxidoreductases and their enzyme sources in the synthesis of optically active drugs.

本文介绍水解酶、氧化还原酶及其酶源在光学活性药物合成中的应用。

When carries various chemical modifications on double helical molecular of optically active, we can always gain derivatives which have specific properties.

在具有光学活性的螺旋分子母体上进行各种化学修饰，可以获得许多具有特殊性能的衍生物。

The industrial synthesis of certain optically active intermediates, including chiral amino acids, carboxylic acids, alcohols, amines and epoxides is reviewed.

重点叙述了某些光学活性中间体的工业合成技术，包括手性氨基酸、手性羧酸、手性醇、手性胺和手性环氧化物。

The main route for obtaining optically active alcohols is resolution of racemic alcohols catalyzed by enzyme in organic solvents by the esterification reaction.

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。

Since WDM channels share optically active devices such as EDFAs, network management of one channel may affect the power and noise features of the other channels.

由于在WDM系统中，各个信道共用光有源器件(如edfa)，对某一信道的网络操作有可能影响其它信道的功率和噪声特性。

This article introduces the application of hydrolases, oxidoreductases and their enzyme sources in the synthesis of optically active drugs. 29 references are presented.

本文介绍水解酶、氧化还原酶及其酶源在光学活性药物合成中的应用。

Optically active polyamide-imide progress abroad was studied. Summarizes the synthesis of optically active polyamide-imide, solubility and thermal stability changes ment.

总结了手性聚酰胺酰亚胺的合成种类，溶解性及热稳定性等方面的变化。

Several enzymatic methods, including enzyme catalyzed enantioselective synthesis and kinetic resolution, for the preparation of optically active cyanohydrins are reviewed.

综述了酶催化立体选择性合成及动力学折分制备旋光性氰醇的几种方法。

The synthetic methods for such chiral C3 synthons as optically active glycerol and derivatives, which are widely used in asymmetric synthesis, were reviewed with 24 references.

叙述了光学活性甘油醇及其衍生物等手性C3合成子的合成方法，以及这些手性化合物在不对称有机合成中的应用，参考文献24篇。

The method of using optically active phenylglycine butyl ester as resolution agent can obtain the higher yield, and it is easy to operate. So it is suitable for industrial production.

以手性苯甘氨酸丁酯为拆分剂的方法操作简单、收率较高，适于工业化生产。

However, if optically active reagents are being used it would be important to avoid the pH range above 6, as at the higher pH range interconversion of the free compound of Formula I occurs.

使用光学活性试剂对避免PH值超过6很重要，因为ph过高时分子式一的化合物可以自由转变。

Chiral bisoxazolines have been widely applied ligands to asymmetric catalysis and a series of optically active bisoxazolines with rigid backbones and different chelate sizes were synthesized.

手性双恶唑啉是在不对称催化中广泛应用的一类重要的配体。

As important choral intermediates, optically active alcohols were widely used in the production of pesticide and liquid crystals for their vital useful value, widely interesting have been aroused.

光学活性醇被广泛用作杀虫剂及液晶材料生产的重要手性中间体，因其具有重要的应用价值，已引起人们广泛兴趣。