外消旋化合物

结果表明，所研究的氨基酸在此波段有特征吸收峰，THz时域光谱能够鉴别对映异构体和他们的外消旋化合物。

We found six amino acids showed distinct fingerprint spectra in the THz region . Our result also suggests that we can identify the enantiomers and their racemic compounds by measuring the absorption spectra in the THz region .

该方法以谷氨酸和苯丙氨酸为例对手性对映体及其外消旋化合物进行了THz光谱测量，研究结果表明氨基酸手性对映体及其外消旋化合物的THz吸收谱之间存在明显差异。

Taking glutamic acid and phenylalanine as examples , the THz-TDS is used to measure the enantiomers and their racemic compounds of the two amino acids . The results show that the spectra between the enantiomers and their racemic compounds have distinct differences .

大豆苷元可代谢为具有一对对映异构体的外消旋化合物雌马酚（equol），而在人和动物体内大豆苷元的代谢产物均为S-型。

The daidzein can metabolizable into a pair of enantiomers of racemic compounds equol . However , the metabolic products of daidzein both in the body of human and animals are S-equol .

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 .

现在越来越多的方法应用到用酶高效催化手性非外消旋化合物的对映性选择反应中来。

More and more new strategies were continually applied for the catalysis of the enantioselective synthesis of chiral non-racemic compounds with enzymes .

脂肪酶已广泛用于制备光学纯手性化合物的不对称反应中，但大多数酶催化拆分外消旋化合物的立体选择性不很理想.脂肪酶不对称立体选择性能改善的研究进展

Lipase has been extensively used in asymmetric reaction for producing optically pure compounds . Progress in Improving the Asymmetric Enantioselectivity of Lipase for Catalyzing Asymmetric Reaction

综述了手性包结拆分方法在拆分外消旋化合物中的应用，并讨论了包结拆分中的手性识别原理。参考文献47篇。

The resolution of racemic compounds by crural inclusion complexation reported in 47 references is reviewed with 47 references . The chiral recognition principles in inclusion complex is also discussed .

手性毛细管气相色谱法拆分外消旋香料化合物

Separation of Racemic Mixtures of Fragrance by Chiral Capillary Gas Chromatography

在正相色谱条件下，对15种外消旋体化合物进行拆分，其中11种手性化合物得到了好的分离。

Among the 15 racemates , 11 chiral compounds could be separated on the column .

以有机碱为催化剂，通过三唑三甲基丙酮与2，4-二氯苯甲醛的反应，合成了具有生物活性的外消旋体化合物烯唑醇。

By using alkalamides as the catalyst , diniconazole has been synthesized by the reaction of triazolyl-trimethylacetone and2,4-dichlorobenzaldehyde .

研究了利用手性毛细管气相色谱法，用三种手性毛细管柱拆分外消旋香料化合物的方法。并对这三种手性毛细管柱加以比较。

Separation of racemic mixture of fragrance using chiral capillary gas chromatography and three types of chiral capillary column .

介绍一个绿色化的外消旋体化合物拆分与光活性表征的微型综合化学实验。

A new comprehensive chemistry experiment study on the optical resolution and the characterization was introduced as microscale laboratory .

几种外消旋环氧化合物用（S，S）2催化水解进行动力学拆分，同时得到光学活性环氧化合物和二醇，对映体过量最高达616%。

The complex 13 was then oxidized to give the chiral catalyst ( S , S ) - 2 . Several racemic epoxides were resolved by enantioselective hydrolysis in the presence of ( S , S ) - 2 catalyst , giving optical active epoxides and diols with the e.e.