enantiomeric excess
英
美
对映体过量；旋光异构体过量
双语例句
- What was the final titer ( product concentration), yield, enantiomeric excess, selectivity, etc. of the process?
此程序的最终测定浓度（产物浓度）、产率、镜像异构物过剩值、选择性等为何？ - Theory and Applications of Kinetic Method for Chiral Recognition and Enantiomeric Excess Measurement
质谱动力学方法在手性识别及对映体过量值方面的原理及应用 - Synthesis of a New Cyclodextrin Derivative and Its Application as CGC Chiral Stationary Phase in Determination of Enantiomeric Excess
一种新的环糊精衍生物手性固定相的合成及其在对映异构体过量值测定中的应用 - Optically active trans-1-( 4-alkylcyclohexyl) alcohols widely used in chiral liquid crystal materials were prepared via chemical resolution with commercially available chiral α-methylbenzylamine in excellent enantiomeric excess of 90% to> 99%.
用手性α苯乙胺为拆分剂通过化学拆分以较好的收率制备了可作为手性液晶材料的光学活性反式1（4烷基环己基）醇，光学纯度达90%～>99%。 - Enantiomeric excess is determined by~ 1H NMR spectral analysis using Eu ( hfo)_3 as chiral shift reagent.
用加入手征性位移试剂Eu（hfc）3的~1HNMR谱测定了对映体过量百分数。 - Effects of culture condition, co-substrates and their concentrations, reaction time, temperature, pH, substrate concentration, and cell concentration on the yield and enantiomeric excess ( e.e.)
分别考察培养条件、共底物种类及浓度、转化时间、转化温度、底物添加量、细胞浓度和pH值等因素对产物得率和对映体过量值（e.e.）的影响。 - These methods had been successfully applied to the ( determination) of the enantiomeric excess of the drug enantiomers. Excessive zinc powder was used.
实现了应用高效液相色谱法在α1-酸糖蛋白手性柱上对上述化合物的对映体分离，并成功用于手性药物合成中的对映体过量百分率的测定。 - At room temperature, the catalyst 3b displayed the efficient reactivity and the enantiomeric excess ( ee) value of the products was up to 96%.
在室温条件下，催化剂3b表现出较好的催化活性，产物的ee值最高可达96%。 - At low conversion, the S-isomer of ibuprofen n-octyl ester could be obtained with high enantiomeric excess.
在低转化率下，能得到高对映体过量值的S-构型布洛芬正辛酯。 - ( R, R) Cinnamyl alcohol epoxide, a key intermediate of ( S, S) reboxetine, was synthesized under mild conditions using inexpensive hydrogen peroxide as an oxidant catalyzed by D fructose derived ketone with high yield and excellent enantiomeric excess.
在温和条件下，采用便宜的过氧化氢，在D-果糖衍生物催化下得到了（S，S）构型瑞波西汀关键中间体（R，R）肉桂醇环氧化物，获得了高产率和立体选择性。 - Over the past years, several metal-catalyzed ( nickel, palladium, rhodium, ferrumiron and copper) and Lewis acid-catalyzed ring-cleaving reactions have been developed that generate ring-opened products in high yield and enantiomeric excess.
有机金属试剂（其中包括镍、钯、铑、铁、铜）以及路易斯酸能选择性地催化氧杂双环烯烃的亲核开环反应，并建立多个手性中心。 - The recent progress of proline-catalyzed direct asymmetric Michael reactions was reviewed, including the proline-catalyzed direct asymmetric Michael reactions in organic solvent and ionic liquid, the amplification of enantiomeric excess.
综述了脯氨酸催化的直接不对称Michael反应的研究进展，包括脯氨酸作为催化剂在有机溶剂、离子液体溶剂条件下的反应以及脯氨酸催化的放大效应； - Real-time assessment of enantiomeric excess ( e.e.)
同步辐射时间分辨荧光光谱技术在手性合成或拆分过程中，实时监测反应产物的对映体过量（e.e.） - Chiral HPLC Determination of Conversion and Enantiomeric Excess of Enzyme Catalyzed Stereoselective Esterification of Racemic Ibuprofen
手性HPLC法测定布洛芬立体选择性酯化的转化率和对映体过量 - In the process conditions, the conversion rate of methyl mandelate was 78.43%, with an enantiomeric excess of 71.46% in a reaction time of 20 h. The E was 2.8.
在该工艺条件下，底物的转化率为78.43%，底物对映体过量值为71.46%，E值为2.8。 - The method does not require the synthesis of chiral probe nor a chiral recognizing detector. This work provides a new strategy for chiral recognition, and an alternative for the determination of enantiomeric excess.
本方法既不需要特意合成手性的探针，也不需要具有手性区分功能的检测器，是一种新型的手性识别策略，为对映体过量检测方法的发展提供了新途径。