采用牛肝酯酶拆分紫杉醇侧链合成中生成对映异构体化合物的新方法。
A novel enzymatic resolution of an enantiomeric mixture, from the synthesis of side chain of taxol, using beef liver esterase is described.
介绍抗癌药物紫杉醇的几种合成方法,重点阐述紫杉醇手性侧链合成以及应用紫杉醇手性侧链的重要性。
The synthesis of chiral side chain of taxol and the significance of application of chiral side chain are described in detail.
介绍抗癌药物紫杉醇的几种合成方法,重点阐述紫杉醇手性侧链合成以及应用紫杉醇手性侧链的重要性。
The methods for synthesizing anticarcinogen taxol are introduced. The synthesis of chiral side chain of taxol and the significance of application of chiral side chain are described in detail.
究其原因1)C-13侧链合成不足,2)紫杉醇核心部分与侧链结合处酶—苯丙基转移酶(BAPT)表达量低。
The reason for that were 1) the scarcity of C-13 side chain synthesis, 2) the low expression level of the phenylpropanoyltransferase (BAPT) transfering the side chain directly to baccatinlll.
长链酰基辅酶A合成酶把游离脂肪酸活化成为酰基辅酶A。
Long-chain acyl-coenzyme A synthetases activate free fatty acid to acyl-CoA thioesters.
现在的科技可以随意合成冗长的DNA链,这意味着我们已经能够复制病毒的基因组,而细菌基因组的复制也指日可待。
The ability to synthesise huge screeds of DNA at will means the genomes of viruses can be replicated already, and replicating those of bacteria is not far off.
蛋白质是生命的建造材料,它们是长分子链,只有在这些分子被组合成最终的三维形态时才可正常运作。
Proteins, which are the building blocks of life, come in long chains of molecules that work properly only once they have folded into their final, three-dimensional shape.
将简单选择符和组合符结合成链就增加了额外的匹配条件,因此选择符的主题总是那些符合最右端的简单选择符的元素的子集。
Prepending a simple selector and combinator to a chain imposes additional matching constraints, so the subjects of a selector are always a subset of the elements matching the last simple selector.
该研究的下一步是设计更多的新的转运RNA,使得更多的非常规氨基酸能够被携带参与蛋白链的合成。
The next step in this direction is to design more new tRNAs that can incorporate more unnatural amino acids into protein chains.
遗传就像一位“裁缝”,用像“手指”一样的分子先抓住DNA,把它剪开后再缝合成一个新DNA链。这有可能是较为安全的基因疗法。
The genetic equivalent of a tailor who USES molecular "fingers" to grab onto DNA, before snipping it apart and stitching in a new sequence could lead to safer gene therapies.
重点在于在区分处在松散参与者之间的服务以及请求,并将其组合成一个服务价值链。
The point is to partition services and requests among loosely coupled participants assembled in a service value chain.
与Fodor博士不同的是,斯坦福的研究者利用被称为“探针”的合成前DNA链,然后将其利用机器人放置或“标记”在载玻片之上。
Unlike Dr Fodor's method, the Stanford researchers used pre-synthesised DNA strands, called probes, that were placed or “spotted” on the slide by a robot.
该研究团队正在想办法在实验室人工合成HIV表面发现的具有特殊结构的糖链。
The team now aim to come up with ways of making synthetic versions in the lab of the particular carbohydrates found on the outside of HIV.
这种由合成微球与短链DNA结合的材料可以用作一种新类型的生物传感器的基体,或是用来构成新的药物输送系统的基础。
The material, which consists of synthetic spheres 'glued' together with short strands of DNA, could be used to underpin a new class of biosensors, or form the basis for new drug delivery systems.
而酰胺型开链配体具有合成简单、结构可调和共轭敏化基团可换等优点,通过调整配体的功能基团可以实现配合物更好的发光性能。
Amide ligands have the advantage in simple synthesis, adjustable structure and changeable sensitive conjugate groups, which make their complexes indicated good luminescence properties.
在所有已存在的生命形式中,细胞的蛋白质合成机制通过读取代表核苷酸的四个DNA化学“字母”来合成氨基酸链。
In all existing life forms, the cell's protein-making machinery reads the four chemical "letters" of DNA - called nucleotides - in triplets to make chains of amino acids.
由于在侧链的合成中,有手性碳原子发生了构型翻转,因此我们合成了一个相应的多利培南光学异构体,以利于质量控制。
Due to the configuration inversions of chiral carbon in the synthesis of side chain, we synthesized the corresponding optical isomer of doripenem for quality control.
本文旨在研究以长链脂肪酸和蔗糖为主要原料合成蔗糖多酯的工艺路线。
This paper relates to the synthesis of sucrose polyesters by sucrose and fatty acid using solvent-free process.
长链烷基苯是合成洗涤剂的重要原料,是由苯与长链烯烃在酸性催化剂作用下烷基化反应生成的。
Linear alkylbenzenes are important raw materials for the synthesis of washing agent and it is synthesized from the alkylation of benzene with long-chain alkene in the presence of an acid catalyst.
本文合成了侧链上带有酰胺基、羧基、酯基和羟基的水溶性聚丙烯酸树脂。
A water soluble acrylic coatings with amide, carboxyl, ester and hydroxyl group on side-chain have been synthesized.
利用硝酸盐作为化学合成作用中,电子传递链之电子提供者。
To use nitrate as electron donor in the electron transport chain during chemosynthesis.
这类材料的合成研究呈现出共轭链由短到长,分子由简单到复杂,由一维到多维的趋势。
Studies on the synthesis of these NLO materials show the evolution of conjugated chains longer, molecule structure more complex and multi-dimensional.
通过接枝反应合成了一系列侧链含联苯类介晶基元的聚醚型树脂,并对合成工艺进行了探讨。
A series of polyether resins with pendent biphenyl mesogenic groups were synthesized, and the synthetic technics were discussed.
目的:研究淫羊藿、枸杞子对老年大鼠线粒体DNA缺失、线粒体呼吸链酶复合体及AT P合成的影响。
Objective: to investigate the effect of Herba Epimedii and Fructus Lyci I on mitochondrial DNA deletion, activity of respiratory chain enzyme complexes and ATP synthesis.
目的:合成头孢克肟侧链活性酯。
Objective: To study the synthetic technique of cefixime activated thioester.
近期进展是利用手性辅助试剂,不对称合成链状和环状的1,4-二羰基化合物。
Recent developments making use of chiral auxiliaries have put forward the versatility of procedure for the asymmetric synthesis of linear and cyclic 1,4-dicarbonyl compounds.
将柠檬酸作为侧基引入到聚羧酸大分子链中,合成了一种新型聚羧酸系高效减水剂。
A new polycarboxylic acid type superplasticizer was synthesized by introducing citric acid to polycarboxylic acid molecule as branch in order to solve concretes slump-loss, bleeding and segregation.
实验采用二异氰酸酯与聚醚二元醇、亲水扩链剂反应合成水性聚氨酯。
In the experiment, di-isocyanate, polyether diol and a hydrophilic chain-extender were used to synthesize aqueous urethane.
实验采用二异氰酸酯与聚醚二元醇、亲水扩链剂反应合成水性聚氨酯。
In the experiment, di-isocyanate, polyether diol and a hydrophilic chain-extender were used to synthesize aqueous urethane.
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