Synthesis and Antituberculosis Activity of <i>C</i>-Phosphonate Analogues of Decaprenolphosphoarabinose, a Key Intermediate in the Biosynthesis of Mycobacterial Arabinogalactan and Lipoarabinomannan
作者:Charla A. Centrone、Todd L. Lowary
DOI:10.1021/jo026247r
日期:2002.12.1
arabinosyltransferases that use decaprenolphosphoarabinose (3) as the donor species. In this paper, we describe the synthesis of a panel of C-phosphonate analogues of 3, which were designed to inhibit these arabinosyltransferases and thus block the biosynthesis of mycobacterial cell wall polysaccharides. A number of routes were explored for the preparation of the targets. The successful approach involved the
分枝杆菌中的细胞壁复合物,包括人类病原体结核分枝杆菌,大部分包含在两种多糖中,其中含有大量的阿拉伯呋喃糖残基。这两种多糖都是由阿拉伯糖基转移酶家族组装而成的,这些家族使用癸癸醇磷酸阿拉伯糖(3)作为供体。在本文中,我们描述了一组3的C-膦酸酯类似物的合成,旨在抑制这些阿拉伯糖基转移酶,从而阻止分枝杆菌细胞壁多糖的生物合成。探索了许多路线以准备目标。成功的方法涉及合成保护的C-膦酸酯烯丙基酯16,然后通过烯烃交叉复分解反应将其偶联到烯烃上。随后用二酰亚胺还原烯烃并脱保护得到目标。这些化合物在体外针对结核分枝杆菌的筛选显示,其中一种化合物15f具有抗结核活性,MIC值为3.13 microg / mL。