Interaction of 5-acetyl-8-quinolinol, corresponding 1-ethylquinolinium iodides, and 8-hydroxyquinoline-7-carbaldehyde with diethylmalonate under basic condition gave the corresponding of 4–6. Further reaction of 4–6 with hydrazine, phenyl hydrazine, hydroxylamine, urea, and/or thiourea gave the corresponding 1-[8-hydroxy-5(7)-quinolinyl]alkylidene-substituted heterocyclic derivatives (7–16) and corresponding 1-ethylquinolinium iodides (17–21). The structure of the synthesized compounds was confirmed by elemental and spectral analysis. The biological activity of 5-substituted 8-quinolinol was tested as microbicidal and bioregulator agents, the results obtained were interpreted according to their structure-activity relationships.
在碱性条件下,5-乙酰基-
8-喹啉醇、相应的 1-乙基
喹啉鎓
碘化物和
8-羟基喹啉-7-
甲醛与
二乙基丙二酸二乙酯反应,得到相应的 4-6。4-6 与
肼、苯
肼、
羟胺、
脲和/或
硫脲进一步反应,可得到相应的 1-[8-羟基-5(7)-
喹啉基]亚烷基取代杂环衍
生物(7-16)和相应的 1-乙基
喹啉鎓
碘化物(17-21)。合成化合物的结构通过元素分析和光谱分析得到了证实。对 5-取代的
8-喹啉醇作为杀微
生物剂和
生物调节剂的
生物活性进行了测试,并根据其结构-活性关系对测试结果进行了解释。