作者:David A. Evans、Stephen W. Kaldor、Todd K. Jones、Jon Clardy、Thomas J. Stout
DOI:10.1021/ja00175a038
日期:1990.9
A convergent asymmetric synthesis of the antinoeplastic macrolide antibiotic cytovaricin has been achieved through the synthesis and coupling of the illustrated spiroketal and polyol glycoside subunits. All absolute steroechemical relationships within the target structure were ultimately controlled by the use of asymmetric aldol, alkylation, or epoxidation methodology. Union of the two subnits was
通过图示的螺缩酮和多元醇糖苷亚基的合成和偶联,已经实现了抗肿瘤大环内酯类抗生素细胞病毒素的收敛不对称合成。目标结构内的所有绝对立体化学关系最终都通过使用不对称羟醛、烷基化或环氧化方法来控制。两个亚硝基的结合是通过 Julia-Lythgoe 反式烯化完成的,提供了对合适的大环内酯化底物的直接访问