Synthesis of the antitumor antibiotic FR-66979: Dmitrienko oxidative expansion of a fully functional core structure
作者:Hee-Jong Lim、Gary A. Sulikowski
DOI:10.1016/0040-4039(96)01109-4
日期:1996.7
A stereocontrolled synthesis of the pentacyclic ring system 18, a projected advanced intermediate in the synthesis of FR-66979 (2), has been achieved. Key steps in the assembly of 18 include a copper(I) mediated cylization-oxidation of diazoketone 6 to mitosene 16 followed by an oxidative expansion of 16 to 18. The latter transformation proceeds via N-oxidation of diol 17.
五环系统18的立体控制合成,是FR-66979(2)合成中的一种预计的高级中间体。组装18的关键步骤包括铜(I)介导的重氮酮6的环化氧化为亚油基16,然后氧化膨胀为16至18。后者的转化通过二醇17的N-氧化进行。