Total Synthesis of Dendroamide A: Oxazole and Thiazole Construction Using an Oxodiphosphonium Salt
作者:Shu-Li You、Jeffery W. Kelly
DOI:10.1021/jo0302657
日期:2003.11.1
The total synthesis of dendroamide A (1), a multidrug-resistance reversing bistratamide-type peptide-derived macrocycle, has been accomplished in 19% yield. Fmoc-protected amino acids were condensed into appropriately protected dipeptides which were treated with bis(triphenyl)oxodiphosphonium trifluoromethanesulfonate to afford oxazoles and thiazolines (oxidized to thiazoles) with high chemo- and stereoselectivity
树突酰胺A(1)是一种多药耐药性逆转双链酰胺类肽衍生的大环化合物,其总合成产率为19%。将Fmoc保护的氨基酸浓缩成适当保护的二肽,将其用三氟甲磺酸双(三苯基)恶二磷鎓处理,得到具有高化学和立体选择性的恶唑和噻唑啉(氧化为噻唑)。三个杂环氨基酸的会聚缩合,然后进行大环化,得到了天然产物。