查询词典 enantiomer

Bi-2; 2′-naphthol ; enantiomer resolution ; asymmetric synthesis ; asymmetric oxidation reaction ; asymmetric reduction reaction

1； 1′-联二萘酚；对映体拆分；不对称合成；不对称氧化反应；不对称还原反应

In our method the favorite resolving agent to a given racemate and suitable resolution method can be found, and it can be predicted which enantiomer is expected in excess in the crystallized diastereomeric salt.

通过该方法，可寻找到对于特定的消旋物理想的拆分剂以及合适的拆分方法，并且可预测在非对映体盐中，何种形式的盐将占主体。

Separation of enantiomer for the acidic racemate could be improved with a lower pH value of the mobile phase since the dissociation of acidic compound was impressed, but it did not affect significantly the resolution of neutral compounds.

在流动相中使用低pH值，能有效抑制酸性化合物的解离，从而显著增强其手性识别能力；对于中性化合物，流动相中pH对手性分离影响不大。

For drug substances with chiral centers or other configurational requirements, the specifications and tests should assure that material (whether a single enantiomer or isomer, a racemate, or a known ratio of isomers) with the requisite properties for therapeutic activity has been produced.

对有手性中心或其它结构要求的原料药，相关的控制参数和检验应该能够保证，所生产出原料药具有治疗活动所需特征。

For drug substances with chiral centers or other configurational requirements, the specifications and tests should assure that material (whether a single enantiomer or isomer, a racemate, or a known ratio of isomers) with the requisite properties for therapeutic actiity has been produced.

对有手性中心或其它结构要求的原料药，相关的控制参数和检验应该能够保证，所生产出原料药具有治疗活动所需特征。

Objective To develop a RP-HPLC method for the enantiomeric separation of indapamide on a new chiral column CHIRALCEL OD-RHcellulose tris(3,5-dimethylphenylcarbamatecoated on a5μm silica-gel substratefor pharmaceutical study of indapamide.Methods To obtain optimistic method for the enantiomeric separation of indapamide,the inferences of the composition of mobile phase,the flow rate and the temperature on the enantiomer retentivity and selectivity were examined and discussed.

目的采 用新型反相手性色谱柱CHIRALCEL OD-RH(纤维素3，5-二甲基苯基氨基甲酸酯涂敷在5μm硅胶上)，建立吲达帕胺对映体的反相高效液相色谱拆分方法，为研究吲达帕胺手性对映体药代动力学提供基础。

OBJECTIVE To establish a method for determination of levo-enantiomer in Tolterodine Tartrate by HPLC.

目的建立高效液相色谱法测定酒石酸托特罗定中左旋异构体的方法。

A general theme of these processes is the combination of an enantioselective enzyme with a chemical reagent,the latter being used either to racemise the unreactive enantiomer or alterna...

在催化反应过程中，一般都是对映体选择性酶与化学试剂的相结合，化学试剂一般常用于催化非活性对映体发生去消旋反应或是回收去消旋化过程中的中间体。

Their specific optical rotation is higher than 1, 1'-binaphthyl monomer in concentrated sulfuric acid, and increased with the excess enantiomer percentage of monomers increased, but the direction of rotation is not same with their monomer.

它们的结晶度较低，在浓硫酸中的旋光活性远大于联萘单体，其旋光值与聚合物手性单元的过量比例成线性关系，但旋光方向却与单体不同。

The first asymmetric total synthesis of coumarinolignoids Daphneticin and it's enantiomer was accomplished starting from 7-hydroxycoumarin and 3, 4, 5-trimethoxybenzaldehyde, in which Sharpless asymmetric dihydroxy reaction was used to construct chiral center, and Mitsunobu reaction was used to obtain desired configuration.

并以7-羟基香豆素和3，4，5-三甲氧基苯甲醛为起始原料，用Sharpless不对称双羟化反应构筑手性中心，用Mitsunobu偶联反应作为关键步骤，合成了手性的香豆素木脂素Daphneticin及其异构体。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。