The synthesis of new cadiolide analogues was carried out using a one-pot multi component synthesis. The antibacterial activity of these molecules was evaluated on standard and antibiotic resistant bacterial strains chosen for their involvement in human health or in food-born poisoning. Four molecules have shown good activities with MICs of 2 μg/mL-1. The introduction of an indole group or the conversion
使用一锅多组分合成法进行新的环戊二烯类似物的合成。这些分子的抗菌活性是根据对人类健康或食物中毒有关的标准和耐抗生素细菌菌株进行评估的。四个分子均显示出良好的活性,MIC为2μg/ mL -1。吲哚基的引入或内酯向内酰胺的转化突出了具有希望的抗菌活性的两个新的分子家族。另外,大多数这些活性分子没有针对角质形成细胞的细胞毒性活性。
Step-Economical Synthesis of the Marine Ascidian Antibiotics Cadiolide A, B, and D
作者:John Boukouvalas、Charles Thibault
DOI:10.1021/jo502503w
日期:2015.1.2
include (i) one-pot assembly of a key β-aryl-α-benzoylbutenolide buildingblock by regiocontrolled “click–unclick” oxazole–ynone Diels–Alder cycloaddition/cycloreversion and ensuing 2-alkoxyfuran hydrolysis and (ii) a protecting group-free vinylogous Knoevenagel condensation enabling rapidaccess to cadiolides A, B, and D from a common precursor.