Efficient synthesis of anacardic acid analogues and their antibacterial activities
作者:Sreeman K. Mamidyala、Soumya Ramu、Johnny X. Huang、Avril A.B. Robertson、Matthew A. Cooper
DOI:10.1016/j.bmcl.2013.01.074
日期:2013.3
strong ortho-directing group. In the initial route, tertiary amide cleavage during final step was challenging, but cleaving the tertiary amide before Wittig reaction was beneficial. The Wittig reaction with protected carboxylic group (methyl ester) resulted in side-products whereas using sodium salt resulted in higher yields. The novel compounds were screened for antibacterial activity and cytotoxicity
熊果酸衍生物表现出广泛的生物学活性。在本报告中,探索了一种合成脱水萘酸衍生物的有效方法,并合成了一小套水杨酸变体,这些变体保留了恒定的疏水性元素(萘基尾巴)。经由Wittig反应引入萘基侧链,并使用取代的邻茴香酸的直接邻位金属化反应安装醛。失败邻-metalation使用未保护的羧酸基团迫使我们使用定向邻位-metalation其中叔酰胺用作强邻指导小组。在最初的途径中,在最终步骤中裂解叔酰胺是具有挑战性的,但在Wittig反应之前裂解叔酰胺是有益的。带有受保护的羧基(甲酯)的Wittig反应产生副产物,而使用钠盐则产生更高的收率。筛选了新型化合物的抗菌活性和细胞毒性。尽管在水杨酸根基团上的取代增强了抗菌活性,但它们也增强了细胞毒性。