Synthesis and Antimicrobial Evaluation of Fire Ant Venom Alkaloid Based 2-Methyl-6-alkyl-Δ<sup>1,6</sup>-piperideines
作者:Yujie Yan、Yu An、Xiaozhong Wang、Yingqi Chen、Melissa R. Jacob、Babu L. Tekwani、Liyan Dai、Xing-Cong Li
DOI:10.1021/acs.jnatprod.7b00625
日期:2017.10.27
The first synthesis of 2-methyl-6-pentadecyl-Δ1,6-piperideine (1), a major alkaloid of the piperideine chemotype in fire ant venoms, and its analogues, 2-methyl-6-tetradecyl-Δ1,6-piperideine (2) and 2-methyl-6-hexadecyl-Δ1,6-piperideine (3), was achieved by a facile synthetic method starting with glutaric acid (4) and urea (5). Compound 1 showed in vitro antifungal activity against Cryptococcus neoformans
的第一合成2-甲基-6-十五烷基Δ 1,6 -piperideine(1),在火蚁毒液的piperideine化学型的主要生物碱,和其类似物,2-甲基-6-十四烷基Δ 1,6通过戊二酸(4)和尿素(5)开始的简便合成方法获得-哌啶(2)和2-甲基-6-十六烷基-Δ1,6-哌啶(3)。化合物1对IC卡50的新隐球菌和白色念珠菌具有体外抗真菌活性。值分别为6.6和12.4μg/ mL,对万古霉素耐药的粪肠球菌的抗菌活性为IC 50值为19.4μg/ mL,而化合物2和3对这些病原体的活性较低。所有三种化合物强烈抑制寄生虫杜氏利什曼原虫前鞭毛体和布氏锥虫带IC 50倍中的分别5.0-6.7和2.7-4.0微克/毫升的范围内,的值。