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cyclic derivatives
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  环状衍生物
     Synthesis and antimicrobial activities of amino acid cyclic derivatives
     氨基酸环状衍生物的合成及抑菌活性
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  “cyclic derivatives”译为未确定词的双语例句
     The synthesis and pharmacological effects of tacrine derivatives and their analogs were obtained from three main series:aromatic/saturated cyclic derivatives and the tacrine analogues have been systematically reviewed.
     从他克林的芳环、脂环和侧链氨基等 3个方面对他克林衍生物及类似物的合成和药理研究进行综述。
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  相似匹配句对
     THE SYNTHESIS OF DERIVATIVES OF CYCLIC NUCLEOTIDES
     环状核苷酸及其衍生物的合成
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     Theortical Studies on Cyclic-polyindenoindenes and Their Derivatives
     环状聚茚并茚及其取代衍生物电子结构和磁性研究
短句来源
     D—CYCLIC CRAPHS
     D—Cyclic图
短句来源
     Chitiu and Its Derivatives
     甲壳素及其衍生物概述
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     Cyclic Esotropia
     周期性内斜视(附23例报告)
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  cyclic derivatives
The addition reactions led, at 20°C, to linear monoadducts and, at 50°C, to cyclic derivatives resulting from double addition.
      
Ionization constants of cyclic derivatives of phosphorus acids in n-propyl alcohol
      
Cyclic derivatives of 3-fluoro-3,3-dinitro-1-aminopropane
      
Synthesis of some of the simpler carbo cyclic derivatives of barene
      
Synthesis and biological activity of uncondensed cyclic derivatives of piperidine (review)
      
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In order to examine the feasibility that whether N-phosphorylated amino acid moiety would function as a carrier of the transport form of nitrogen mustard derivatives with the desired specificity in cancer chemotherapy, a number of amino acid derivatives of bis (β-chloroethyl)-phosphoramidic dichloride were prepared. Treatment of bis (β-chloroethyl)-phosphoramidic dichloride (Ⅰ) with two equivalents of the ethyl ester (Ⅱ) of glycine, alanine, valine, leucine, phenylalanine, aspartic acid, and glutamic...

In order to examine the feasibility that whether N-phosphorylated amino acid moiety would function as a carrier of the transport form of nitrogen mustard derivatives with the desired specificity in cancer chemotherapy, a number of amino acid derivatives of bis (β-chloroethyl)-phosphoramidic dichloride were prepared. Treatment of bis (β-chloroethyl)-phosphoramidic dichloride (Ⅰ) with two equivalents of the ethyl ester (Ⅱ) of glycine, alanine, valine, leucine, phenylalanine, aspartic acid, and glutamic acid in an inert solvent in the presence of triethylamine afforded the corresponding derivatives of N, N-bis(β-chloroethyl)-N', N"-di-(carboethoxymethyl)-phosphorotriamide (Ⅲ—Ⅸ). Similarly, reaction of the dichlorophophoramide (Ⅰ) with equivalent ethyl ester of serine (Ⅹ) yielded a cyclic derivative, 2-bis (β-chloroethyl)amino-4-carboethoxy-1, 3, 2-oxazophospholidine, 2-oxide (Ⅺ). The compounds derived from glycine, phenylalanine and glutamic acid were crystalline solids, while those from the remaining amino acids were less stable oily substances. The results of screening tests of the above compounds against transplanted tumours will be published in a separate paper.

以N-磷酰氨基酸为载体而形成的氮芥磷酰胺衍生物,可能具有较好的抗肿瘤专属性。双-(β-氯乙基)氨基磷酰二氯(Ⅰ)与二当量的甘、丙、缬、亮、笨丙、天冬及谷氨酸乙酯(Ⅱ)缩合,生成相应的N,N-双-(β-氯乙基)-N′,N″-二-(乙氧羰甲基)磷三酰胺衍生物(Ⅲ);与当量的丝氨酸乙酯(Ⅹ)缩合时生成环状衍生物,2-双-(β-氯乙基)氨基-4-乙氧羟基-四氢-1,2,3-氧膦氮茂,2-氧化物(Ⅺ)。这类化合物经动物实验有显著的抗肿瘤活性。

To improve the sensitivity of cyclic derivative chronopotentiometry, the instrument is constructed by using two electrolytic cells, the measuring cell and the blank cell, to cancel most of the charging current of the electrical double layer. it-E curve is obtained and used in analysis in place of dE/dt-E curve.

本文报道求取i_f~E曲线的一种双电解池差分装置。通过扣除交流示波极谱法总电流中双电层充电电流i_c,测量法拉第电流对工作电极电位的曲线(即i_t~E曲线),可提高灵敏度。

Quantitative analysis in cyclic derivative chronopotentiometry with i_f-E curve is based on measurement of the height of peak on the i_f-E curve. The main advantage of the method over the classical dE/dt-E ourve method is in its accuracy and sensitivity. In this paper, T1~+, Pb~(2+), Cd~(2+), Zn~(2+), Mn~(2+), and Ga~(3+) were determined with the microcomputer-based eleotrochemical data-acquisition system, which was constructed in our own laboratory. Experimental results have shown that in i_f-E curve...

Quantitative analysis in cyclic derivative chronopotentiometry with i_f-E curve is based on measurement of the height of peak on the i_f-E curve. The main advantage of the method over the classical dE/dt-E ourve method is in its accuracy and sensitivity. In this paper, T1~+, Pb~(2+), Cd~(2+), Zn~(2+), Mn~(2+), and Ga~(3+) were determined with the microcomputer-based eleotrochemical data-acquisition system, which was constructed in our own laboratory. Experimental results have shown that in i_f-E curve method the accuracy is 2 to 5 times better and the sensitivity is one order of magnitude higher.

本文提出基于i(?)-E曲线的定量分析方法,并在自行研制的微机电化学数据采集系统上,测定了微量的Tl~+、Pb~(2+)、Cd~(2+)、Zn~(2+)、Mn~(2+)和Ga~(3+).结果表明,与经典的dE/dr-E曲线方法相比,i(?)-E曲线方法的准确度提高了2—5倍、灵敏度提高了一个数量级.

 
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