heterocyclic

1.The structure-activity relationships of heterocyclic hypotensor and ramification are discussed in this paper.

文章从构与活性的角度分析了近年来国内外杂环类抗高血压药及其衍生物的构效关系。

2.Hexahydroxy N-containing heterocyclic compound without sulfur and phosphorus was synthesized and its structure was characterized.

合成了无硫、磷的六元含氮杂环化合物添加剂。

3.By nucleophilic addition and reductive cyclization reaction of the three intermediates, respectively, some azo-heterocyclic derivatives containing a rosinyl skeleton were obtained.

该3个分别经过亲核取代、还原关环应后，得到了一些脱氢松香酸甲酯含氮杂环衍生物；

4.Moreover, we found that N-heterocyclic carbene (NHC) could served as an efficient and novel catalyst for the reactions of aziridines with silylated nucleophiles or acid anhydrides.

随后，我们发现氮杂环卡宾也可以作为一种有机小分子催化剂，分别催化各类硅试剂或酸酐对氮杂环丙烷化合物的开环。

5.These on reduction with NaBH4 gave exclusively cis-3-heterocycle substituted chroman-4-ols in good yields.

【文摘】3,3-Dibromochroman-4-ones on reaction with different heterocyclic secondary amines gave 3-substituted chromones.