Verification of the bilobalide′s absolute configuration using CD spectrum and chemical constituents of the extract from Ginkgo biloba;
应用圆二色谱法验证银杏内酯的绝对构型及银杏提取物的化学成分
This paper describes the determination of the absolute configuration of the key lactone intermediate(2),obtained by cinchonine mediated desymmetrization of cis-1,2,3,6-tetrahydrophthalic anhydride(1),and its application in the stereoselective synthesis of a polyhydroxy cyclohexyl-β-amino acid derivative(6).
本文对从内消旋cis-1,2,3,6-四氢邻苯二甲酸酐经去对称化得到的内酯关键中间体(2)的绝对构型进行了确定,并通过邻二羟基化和内酯开环,经两步反应以45%的产率从化合物(2)高立体选择性地合成了光学活性的(1R,2S,3R,4S,6R)-2,3,4-三羟基-2-(苄氧羰基氨基)-环己烷甲酸苄酯(6)。
The determination of absolute configuration for chiral compounds is one of the most important problem in the organic chemisty, especially for chiral drug synthesis.
手性化合物绝对构型的确定一直是有机化学特别是手性药物合成研究过程中经常遇到的问题之一。
A modified method to determine absolute configuration of organic compou nds;
一个改进的测定有机化合物绝对立体构型的方法
The Synthesis and Confirmation of the Absolute Configuration of Chiral Aminoalkylphenol
手性氨基烷基酚的合成及其绝对构型的确定
Vibrational Circular Dichroism: A New Tool for the Determination of Absolute Configuration of Chiral Molecules
振动圆二色谱:一种确定手性分子绝对构型的新方法
DESIGN OF AN ABSOLUTE HIGH VACUUM PRESSURE GAUGE
一种新型绝对高真空压力规结构的设计
complementary metal insulator semiconductor
互补型金属绝缘体 半导体结构
The new type insulation cylinder used in cast resin transformers
新型结构绝缘筒在浇注型干式变压器中的应用
The Construction of the Concept of Absolute Value from the Episte mological Perspective;
建构绝对价值观念:从认识论视角看
Thinking about the Construction of Witnesses Rejection to the Rule of Giving Evidence in China;
对构建我国证人拒绝作证规则的思考
The Organic Composition of Agricultural Capital and Absolute Rent--A Challenge to the Argument of “Monopoly of Price Leads to Absolute Rent”
农业资本有机构成与绝对地租——“垄断价格绝对地租说”质疑
It is absolutely necessary to type the patient's blood before a blood transfusion.
输血前测定病人的血型是绝对必要的。
It be absolutely necessary to type the patient 's blood before a blood transfusion
输血前测定病人的血型是绝对必要的
Dual Cavity Inter-Compensate Absolute Radiometer (DCICAR);
双锥腔互补偿型绝对辐射计（DCICAR）
Strong Law of Large Number of the Absolute Value Sequences from ARCH;
ARCH模型绝对值序列的强大数定律
A New Type of Neutron Flux Absolute Measurement System
一套新型的中子注量率绝对测量系统
Analysis of the Construction of Water Resistant XLPE Power Cables
防水型交联聚乙烯绝缘电力电缆结构分析
Heat Transfer and Ablation of Insulation in Second Combustion Chamber with Different Configuration in SRR
不同构型固冲发动机补燃室绝热层传热烧蚀
"Even when China becomes stronger and more developed, China will never seek hegemony or pose a threat to anyone"
中国发展和强大起来,也绝不谋求霸权,绝不会对任何国空构成威胁
The file path referred to by an object model call must be absolute.
对象模型调用引用的文件路径必须是绝对路径。
method of absolute judgment
绝对判断法 绝对判断法