pyrimidine

Hydrogen bonds play important roles to living organisms containing pyrimidine-based derivatives.

氢键对含有以嘧啶为基的衍生物的生命体具有重要作用.

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Conclusions: One compound is identified as the title compound 2-benzyloxy-5-fluoro-4-oxo-pyrimidine-3-butyric acid ethyl ester, and the other one is its formula isomer.

结论：通过IR谱确证一个化合物是目标物2-苄氧基-5-氟-4-嘧啶酮-3-丁酸乙酯，另一化合物是它的同分异构体。

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lamivudine is a typical antivirus agent of pyrimidine nucleoside , mainly used for the treatment of hepatitis b.

拉米夫定是一种嘧啶核苷类抗病毒药物，主要用于慢性乙型肝炎的治疗。

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transversion --- a mutation caused by substitution of a purine for a pyrimidine or vice versa.

核酸序列中一种嘌呤（或嘧啶）被另一种嘧啶（或嘌呤）置换。

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The second part study mainly the synthesis of 2,4,6-three substitute pyrimidine and its intermediates, designed method in which 2,4,6-three substitute pyrimidine is synthesized from amidine.

第二部分介绍了2,4,6-三取代基嘧啶及其衍生物的合成研究。

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a pyrimidine nucleoside analogue of cytidine

是属于胞嘧啶类之嘧啶核苷酸类似物

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Advance in dihydropyrimidine dehydrogenase and thymidine kinase influencing on the clinical therapy of pyrimidine chemotherapy drugs

二氢嘧啶脱氢酶和胸腺嘧啶核苷激酶的研究进展

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In particular, the nitrogen-containing heterocycle ligands, such as bipyridine, pyrimidine and azine and their derivatives, are most widely used. As their complexes can generate one-, two-and three-dimensional structures.

含氮杂环-联吡啶、联嘧啶和连氮等杂环化合物及其衍生物-是最常见的多齿配体之一，这些配体与金属Cu（Ⅰ）能形成一维、二维和三维结构的配合物。

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herbicides containing pyrimidine heterocycle have not only unique action of their own, but also high bioactivity.

含嘧啶杂环的除草剂不仅具有独特的作用方式，且具有高的生物活性。

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These genes involved in ribosome, photosynthesis, oxidative phosphorylation, purine and pyrimidine metabolism and chlorophyll biosynthesis.

Pathway分析发现这些差异基因涉及最多的是核糖体、光合作用、氧化磷酸化、嘌呤嘧啶代谢和叶绿素合成途径中。

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Study on the synthesis of 2-diethylamino-6-methyl-4-hydroxy pyrimidine.

二乙氨基 -6- 甲基 -4- 羟基嘧啶的合成研究.

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it is concluded that the mode of action of pyrimidine benzylamine differs from the other typically commercial als inhibitors, such as sulfonylurea and pyrimidine salicylic acid herbicides.

因此，嘧啶苄胺类化合物的除草作用方式不同于磺酰脲类和嘧啶水杨酸类等典型的ALS抑制剂，它是通过植物体内的代谢活化来发挥除草作用。

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Breeding a high pyrimidine producting grain is the precondition for producting cytidine and uridine by fermentation.

选育嘧啶核苷高产菌是实现发酵法生产胞苷、尿苷的前提.

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Cleudine is a pyrimidine analogue with potent and sustained antiviral activity against HB.

克来夫定为嘧啶类似物,对HB具有持续有效的抗病毒活性.

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On the other hand, deoxythymidine might be derived from the combination of pyrimidine alkaloid in tea leaves with microbial secondary metabolite.

胸腺嘧啶脱氧核苷亦可能是茶叶中的嘧啶类生物碱与微生物中的核苷类化合物在后发酵过程中缩合形成的。

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several model compounds that mimic the action of photolyase have been designed, such as a chromophore attached to a pyrimidine dimer.

人们设计了用来模拟光解酶作用的模型化合物，例如将一个发色团共价连接到一个嘧啶二聚体上。

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Base pairing The bonding relationship between purine and pyrimidine bases in the nucleotides of DNA and RNA.

碱基配对：在DNA和RNA的核苷酸中，嘌呤和嘧啶之间相匹配的关系。

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Pyrimidine is an important drug intermediates. In recent years, the study of pyrimidine derivatives was never stoped, especially for the study of Suzuki coupling reaction about this has become hotter and hotter.

嘧啶环化合物是重要的药物中间体，近年来对嘧啶类衍生物的研究从未停止，特别是对其Suzuki偶联反应的研究越来越热。

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For instance, 4-dihydropyrimidine analogues exhibit good antihypertensive activity, some C-5 and/ or C-6 substituted pyrimidine derivatives show good antiviral and cytostatic activities.

如近年来报道合成的杂环化合物二氢嘧啶类的衍生物具有抗高血压的生物活性，还有一些C-5、C-6取代的嘧啶类衍生物体现出很好的抗病毒和抑制细胞再生的活性。

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Study on the spin coupling rules of o, m, p-pyrimidine and its derivatives biradicals

对嘧啶的邻、间、对位双自由基体系的自旋耦合规律的研究

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Clevudine is a pyrimidine analogue with potent and sustained antiviral activity against HBV.

克来夫定为嘧啶类似物,对HBV具有持续有效的抗病毒活性.

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On the other hand , cyclobutane pyrimidine dimmer ( CPD ) just has an effect of cell cycle arrest.

而CPD光 产物 ( cyclobutanepyrimidinedimmer, CPD ) 仅仅造成细胞周期暂时或短期的停滞现象.

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pyrimidine nucleoside phosphorylase and the evaluation of anticancer drugs

嘧啶核苷磷酸化酶与抗癌药物治疗效果的评价

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The substitution of a purine for a pyrimidine, or vice versa is a transversion.

嘌呤为嘧啶取代或嘧啶为嘌呤所取代,叫做颠换.

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Uracil -- a pyrimidine found in RNA that base-pares with adenine.

尿嘧啶 -- 核糖核酸中的一种嘧啶,与腺嘌呤形成碱基对.

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The this paper, some of Heterocycle Compound which including pyridine, imidazole, thiazole, pyrimidine, indol etc, use for pharmaceutical intermediates or raw were summarized.

择要介绍了近期研发的、用于医药品生产的一些杂环化合物的合成和开发情况。这些化合物包括有吡啶类、咪唑、三唑、嘧啶、哌嗪、吲哚类等。

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breeding of pyrimidine nucleotide orotic acid producing mutant

嘧啶核苷类物质乳清酸产生菌的选育

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