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1·Heterocycle is always pyrimidine or triazine.

其中杂环部分常为嘧啶环或均三嗪环。

2·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。

3·Sea pyrimidine can decrease the activity of calcium pump of tumor cells.

海嘧啶可显著降低肿瘤细胞膜钙泵活性。

4·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。

5·The purine and pyrimidine may be complexed with a sugar to produce a nucleoside.

嘌呤和嘧啶可以同一个糖复合，产生一个核苷。

6·The nitrogenous bases are derivatives of two parent compounds, pyrimidine and purine.

核苷的含氮碱基来自两种复合物，嘧啶和嘌呤。

7·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。

8·Pyrimidine as important medicine, pesticide intermediates, application prospects are very broad.

嘧啶化合物作为重要的医药、农药中间体，应用前景非常广阔。

9·Pyrimidine rings, as the essential structure unit in biological systems, exist widely in nature.

嘧啶环广泛存在于自然界，是生命系统必须的分子结构单元。

10·To substitute the ring a of the aurones with pyrimidine, a series of aza aurones were synthesized.

以嘧啶环替换噢中的A环，合成了一系列氮杂噢类化合物。

嘧啶

1·The purine and pyrimidine may be complexed with a sugar to produce a nucleoside.

嘌呤和嘧啶可以同一个糖复合，产生一个核苷。

2·Heterocycle is always pyrimidine or triazine.

其中杂环部分常为嘧啶环或均三嗪环。

3·The second part of this dissertation shows the synthesis and characterization of some different kinds of transition metal complexes of a new dendritic macromolecule and pyrimidine.

论文的第二部分合成出了一系列不同的树枝状高分子过渡金属配合物和嘧啶过渡金属配合物并对它们进行了表征。

4·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。

5·Sea pyrimidine can decrease the activity of calcium pump of tumor cells.

海嘧啶可显著降低肿瘤细胞膜钙泵活性。