Total Synthesis and Biological Evaluation of (5<i>Z</i>,9<i>Z</i>)-5,9-Hexadecadienoic Acid, an Inhibitor of Human Topoisomerase I
作者:Néstor M. Carballeira、José E. Betancourt、Elsie A. Orellano、Fernando A. González
DOI:10.1021/np0202576
日期:2002.11.1
hexadecanoic acid do not inhibit topoisomerase I (>1000 microM). This comparison reveals that the cis double bond geometry in the title compound is required for topoisomerase I inhibition. Moreover, these results suggest that the antimicrobial activity of (5Z,9Z)-5,9-hexadecadienoic acid against either S. aureus or S. faecalis could be a result, at least in part, of the inhibitory activity of the acid against
天然存在的(5Z,9Z)-5,9-十六碳二烯酸以六步法以立体化学方法从市售1,5-己二炔开始合成。标题化合物对革兰氏阳性菌金黄色葡萄球菌(MIC 80 microM)和粪链球菌(MIC 200 microM)具有抗菌作用,但对铜绿假单胞菌等革兰氏阴性细菌没有活性。此外,(5Z,9Z)-5,9-十六碳二烯酸以800 microM的浓度完全抑制人拓扑异构酶I,而5,9-十六碳二烯酸和十六酸不抑制拓扑异构酶I(> 1000 microM)。该比较表明,标题化合物中的顺式双键几何结构是拓扑异构酶I抑制所必需的。此外,这些结果表明(5Z,9Z)-5的抗菌活性