Enantiodivergent total syntheses of (+)- and (-)-scopadulcic acid A

被引:142
作者
Fox, ME [1 ]
Li, C [1 ]
Marino, JP [1 ]
Overman, LE [1 ]
机构
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
关键词
D O I
10.1021/ja990404v
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The first enantioselective total synthesis of scopadulcic acid A is described. The key step is a cascade intramolecular Heck reaction of a methylenecycloheptene iodide, which generates the B, C, and D rings of the scopadulan ring system in 90% yield as a single stereoisomer. A distinctive feature of these syntheses is the use of stereoselective enolization to dictate which enantiomer of the natural product is produced.
引用
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页码:5467 / 5480
页数:14
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