作者:Mark A. Elban、Sidney M. Hecht
DOI:10.1021/jo702487r
日期:2008.2.1
The topopyrones represent a new class of highly cytotoxic topoisomerase I poisons. Efficient total syntheses of all four naturally occurring members of this class have been accomplished. Key elements of the syntheses include Diels−Alder reactions employing two novel dienes and a titanium-mediated ortho-directed Friedel−Crafts acylation. Additionally, the syntheses of two chlorinated analogues accessible
拓扑酮代表一类新的高度细胞毒性拓扑异构酶I毒物。该类所有四个自然存在成员的有效总合成已完成。合成的关键元素包括采用两个新型二烯的Diels-Alder反应和钛介导的邻位Friedel-Crafts酰化反应。另外,描述了可从高级中间体获得的两种氯化类似物的合成。