Synthesis of brasilibactin A and confirmation of absolute configuration of β-hydroxy acid fragment
作者:Yongcheng Ying、Jiyong Hong
DOI:10.1016/j.tetlet.2007.09.112
日期:2007.11
A synthesis of brasilibactin A, a cytotoxic siderophore from the actinomycete of Nocardia brasiliensis, and three unnatural diastereomers of the natural product is described. Four possible diastereomers of the β-hydroxy acid fragment were prepared via asymmetric aldol reactions and used to synthesize brasilibactin A and its diastereomers. Careful analysis of 1H NMR data confirmed that brasilibactin
描述了巴西巴西诺卡氏菌放线菌的细胞毒性铁载体Brasilibactin A和天然产物的三种非天然非对映异构体的合成。通过不对称醛醇缩合反应制备了四种可能的β-羟酸片段的非对映异构体,并用于合成brasilibactin A及其非对映异构体。仔细分析1 H NMR数据证实,brasilibactin A具有17 S,18 R绝对立体化学。