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synthetic strategy
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  合成策略
     Key features of the synthetic strategy include (a) Sharpless asymmetric epoxidation reaction and selective opening 2,3-epoxy alcohol to elaborate the two hydroxy-bearing stereogenic centers at C5' and C6' position;
     关键的合成策略包括:(a)Sharpless不对称环氧化及选择性2,3—环氧醇开环来构建C5'and C6'位两个羟基的立体中心;
短句来源
     A successful synthetic strategy toepare hybrid materials involves the combination of metal-organic complexes andlyoxovanadates.
     当前一个成功的合成策略是用多钒氧酸盐与金属-有机配合物构筑新型的杂化材料。
短句来源
     The synthetic strategy of AC→ABC was used, in which α-cyclocitral was used as A ring synthon. The key intermediate 11 was obtained after condensation of α-cyclocitral with triphenyl phosphonium chloride 8, sequently selective reduction by Pd/C and intramolecular cyclization. 16-Hydroxy-6,7-didehy-draferruginyl methyl ether and three analogues with 16-oxidant group were synthesized from this key intermediate via structure modification.
     采用 AC→ ABC的合成策略 ,以α-环柠檬醛为 A环起始原料 ,通过与 C环化合物 8缩合、选择性还原及分子内环合得到关键中间体 1 1 ,再经过官能团修饰和转换 ,合成了 1 6 -羟基 -6 ,7-脱氢铁锈醇甲醚及其 3个类似物 .
短句来源
     Through the use of the synthetic strategy outlined in this article, the chiral 5-(R)-[(1R,2S,5R)-(-)-menthyloxy]-4-(R)-(heterocyclic base group)-2(5H)-furanones(5) containing one stereogenic center were obtained via the asymmetric Michael addition reaction of heterocyclic bases with the chiron 3. Adducts 5 were reduced to give the functionalized compounds with optical purity, 2-(R)-(heterocyclic base group)-1,4-butanediols(6) in good yields with e.e.
     通过新的合成策略,以手性合成子3和具有生物活性的有机碱类化合物4为反应底物,利用Michael不对称加成反应,合成得到光学纯的5(R)[(1R,2S,5R)(-)氧基]-4-(R)-(杂环碱基)-2-(5H)-呋喃酮(5).
短句来源
  合成反应
     This paper is meant to review the recent advances in the area of inorganic synthesis and preparative chemistry which includes: (1) development of new synthetic reactions, routes and techniques in inorganic synthesis and their basic research, (2) synthetic strategy, route and technique under extreme conditions, (3) biomimetic synthesis and biotechniques in inorganic synthesis, (4) "green synthesis"and (5) molecular design and rational synthesis of inorganic materials.
     介绍目前无机合成与制备化学中的前沿问题:(1)新合成反应、制备路线、技术的开发以及相关的基础理论研究; (2)极端条件下的合成路线、反应、方法与制备技术的基础性研究;
短句来源
  “synthetic strategy”译为未确定词的双语例句
     Study on a New Synthetic Strategy of 3,5-Disubstituted-1-Phenyl- 1,2,4 -Triazole Derivatives
     3,5-二取代-1-苯基-1,2,4-三唑衍生物新合成方法的研究
短句来源
     A Novel and Efficient Synthetic Strategy for 3,5-Disubstituted-1-Phenyl-1 ,2,4-Triazole Derivatives
     合成3,5-二取代-1-苯基-1,2,4-三氮唑衍生物的新方法
短句来源
     The main contents of this section include following: 1) The synthetic strategy of porphyrinAn improved Adler method was used for preparing TAPPH2. TAPPH2 wassynthesized in high yield by direct condensation of pyrrole with 4-aminobenzaldehyde in refluxing propanoic acid with the presence of vitamin C.
     我们通过对Adler法的合成条件进行改进,即在反应体系中加入还原剂Vc,由4-氨基苯甲醛直接合成了对酸敏感的TAPPH(2)(1),提高了总收率,拓宽了Adler法的适用范围。
短句来源
     Here we describe the design and preliminary structural studies of two peptide sequences LTVd-PGLTV(n7) and LTVGDDTV(n5) synthesized by solid phase peptide synthetic strategy.
     文章报导了二条多肽序列(LTVd-PGLTV,n7和LTVGDDTV,n5)的设计、合成和园二色谱研究结果.
短句来源
     This synthetic strategy compared with traditional method has advantages of high yield, elevating reaction rate and simple work-up procedure.
     该法与传统方法相比较具有反应速度快、产率高和后处理简单等优点.
短句来源
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  相似匹配句对
     Development and Strategy of Synthetic Crystals in China
     发展我国人工晶体若干战略问题的探讨
短句来源
     Integration Strategy of the Synthetic Automatic Test System
     综合自动测试系统集成策略
短句来源
     On strategy of learning
     论“学会学习”
短句来源
     (9) Strategy.
     (9)策略
短句来源
     Synthetic of t-BAMBP
     t-BAMBP的合成研究
短句来源
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  synthetic strategy
A new synthetic strategy for hydroxy-epoxy eicosanoids formed through the lipoxygenase pathway is developed.
      
Synthesis of cyclic penta- and hexapeptides: A general synthetic strategy on DAS resin
      
A general synthetic strategy is described for the preparation of peptide-conjugates where the peptides contain the NH2 terminal, COOH terminal, or internal regions of the protein sequence.
      
Preparation from boron-functionalized monomers represents one possible synthetic strategy with free radical polymerization, Ziegler-Natta polymerization, and ring-opening metathesis polymerization methods as the most thoroughly studied procedures.
      
The title cluster was synthesized via a new synthetic strategy based on preformed clusters.
      
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Chairman Mao taught us, "One should seriously sum up one's experience." Looking back at the experiences of our own and of others in the past decade or so on the total synthesis of proteins and polypeptides, we have analyzed the inherent contradictions of the two alternative routes of synthesis on the basis of the dialectical viewpoint of "one divides into two". Either the solid phase or the solution synthesis is fraught with difficulties when the target exceeds 100 amino acids. A new synthetic strategy...

Chairman Mao taught us, "One should seriously sum up one's experience." Looking back at the experiences of our own and of others in the past decade or so on the total synthesis of proteins and polypeptides, we have analyzed the inherent contradictions of the two alternative routes of synthesis on the basis of the dialectical viewpoint of "one divides into two". Either the solid phase or the solution synthesis is fraught with difficulties when the target exceeds 100 amino acids. A new synthetic strategy was developed which we believe could resolve the contradictions inherent in the synthesis of large peptides-the solid phase stepwise condensation of peptide fragments instead of amino acids. Following repeated practice guided by the spirit of independence and self-reliance, we succeeded in synthesizing first of all a new supporting medium which provisionally met our requirements. We shall describe in the present paper the successful total synthesis of the nonacosapeptide glucagon using this supporting medium. Four peptide fragments (5, 6, 9, 6), synthesized with the aid of classical methods, were coupled stepwise to a resin-bound tripeptide, with an efficiency of over 95% for each step. After treatment with hydrogen fluoride and purification twice by means of column chromatography, rhombic dodecahedral crystals of glucagon could be obtained which were identical with natural products in respect of amino acid composition, chromatographic and discelectrophoretic behaviour, etc. The overall yield was about 17%. In view of the characteristic abundance in glucagon of various kinds of functional groups which impart unfavourable obstacles to the course of synthesis, this relatively high yield and the ease with which crystalline products could be obtained testify to the potential of the new technique in the eventual total synthesis of larger proteins.

遵照毛主席关于“要认真总结经验”的教导,作者在回顾十年来多肽合成发展过程的基础上,运用一分为二的唯物辩证观点分析了目前已有的两类合成方法都难以合成含100个氨基酸残基以上的大蛋白质的内在矛盾,指出了可能解决矛盾的途径之一,一个新的合成方案——片段固相缩合法。在“独立自主、自力更生”方针的指引下,通过反复实践,我们合成了初步满足新方法所需要的新材料——表层树脂。本文报导合成胰高血糖素(29肽)的结果,目的是对新方法进行一次考验:先将用经典法合成的四个肽片段(5,6,9,6)在三肽树脂上依次进行缩合,每次缩合率皆达95%以上,全合成以后经过氟化氢处理,两次柱分离纯化,便可获得氨基酸组成、层析及碟状电泳等物化行为与天然品相同的,具有高效增血糖活力的胰高血糖素结晶——正交十二面体。全过程总得率可达17%。根据在胰高血糖素的组成中含有侧链功能团氨基酸较多的特点,在虽然给人工合成过程带来不利影响的情况下仍能获得较高缩合率及通过简单分离即能纯化结晶的结果,说明这一方法有可能为人工合成具有严格结构的较大蛋白质提供一条发展途径。

Recently there has been increasing interest in the synthesis of biologically active sesqui- terpenes associated with drimane. Among a number of different synthetic strategies leading to these molecules, the application of the Diels-Alder reaction to construct an appropriately func- tionalised decalin is especially attractive. Up to now, there are quite a number of reports on the synthesis of drimane sesquiterpenes using the Diels-Alder reaction. However, to con- struct a decalin system using an intramolecular...

Recently there has been increasing interest in the synthesis of biologically active sesqui- terpenes associated with drimane. Among a number of different synthetic strategies leading to these molecules, the application of the Diels-Alder reaction to construct an appropriately func- tionalised decalin is especially attractive. Up to now, there are quite a number of reports on the synthesis of drimane sesquiterpenes using the Diels-Alder reaction. However, to con- struct a decalin system using an intramolecular Diels-Alder reaction has not yet been explored. Here we report the synthesis of racemic and optically active drimane sesquiterpenes with the intramolecular Diels-Alder reaction as the key step.

近年来有不少报道从事于生理活性Drimane类倍半萜的合成,较多采用了分子间Diels-Alder反应来建立Drimane的骨架。本文首次采用内分子Diels-Alder反应作为关键反应合成了Drimane类化合物。同时还在引入了手性诱导基团后,首次完成了从无手性的原料化合物β-紫罗兰酮至光学活性(-)-drimenin1的不对称合成。

The progress on the chemical synthesis of dibenzocyclooctadiene lignans with various biological activities,especially with respect to the synthetic strategies,methods' improvement and new nonphenolic oxidative coupling agents etc.,is reviewed in this paper.

本文从合成战略的角度概述具有多种生理活性的二苯骈环辛二烯类木酚素近年来在化学合成方面的研究进展,特别是近年来合成战略的实施和新非酚氧化偶合试剂的运用。

 
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