对映体

Distribution behavior of terbutaline enantiomorph was investigated in a aqueous/organic two-phase system containing a chiral selector (L-dihexyltartrate).

研究了特布他林对映体在含手性选择剂水－有机溶剂两相体系中的萃取分配行为。

The theory of kinetic method used in the chiral quantification is introduced and the improvement and applications of it are reviewed.

本文对质谱动力学方法用于手性化合物对映体过量值测定的原理、改进方法、应用领域进行了评述。

Levorotatory and dextrorotatory enantiomers of cetirizine and other nine compounds were synthesized and were identified by MS, IR, 1H-NMR and elemental analysis .

通过化学拆分得到单一手性的4-氯-α-苯基苯甲胺，然后由它出发合成出左西替立嗪和其它九个化合物的单一对映体，并经元素分析、红外、质谱、核磁等鉴定。

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

The two enantiomers rotate polarized light through opposite angles, canceling each other out so that the racemic mixture has no optical activity.

两种对映体使偏振光向相反的角度旋转，彼此抵销，所以外消旋混合物没有光学活性。

The two enantiomers rotate polarize d light through opposite angles, canceling each other out so that the racemic mixture has no optical activity.

两种对映体使偏振光向相反的角度旋转，彼此抵销，所以外消旋混合物没有光学活性。

In general, the phosphoamino acid esters were unable to transfer their phosphoryl group to other hydroxyl nucleophiles even with the presence of imidazole, but the N-phosphoserine and threonine esters were two exceptions.

二、测定了部分磷酰化D—氨基酸的磷酰基转移反应速率常数，并对外消旋化合物的酯交换反应进行了旋光度跟踪，发现磷酰化丝、苏氨酸的对映体有明显的区别。

More than 60%conversion of the racemate with enantiomeric excess of product higher than 96%was obtained.

当转化率超过60％时，产物-萘普生的对映体过量值仍在96％以上。

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。

Many chiral drugs may differ in their pharmacological activities due to the difference of stereochemistry.

许多药物对映体由于其空间结构的差异，导致其药理、药效上有很大的不同。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。