Total Synthesis of (±)-Streptonigrin: De Novo Construction of a Pentasubstituted Pyridine using Ring-Closing Metathesis

被引:50
|
作者
Donohoe, Timothy J. [1 ]
Jones, Christopher R. [1 ]
Barbosa, Luiz C. A. [2 ]
机构
[1] Univ Oxford, Dept Chem, Chem Res Lab, Oxford OX1 3TA, England
[2] Univ Fed Vicosa, Dept Chem, BR-36570000 Vicosa, MG, Brazil
关键词
CROSS-COUPLING STRATEGIES; STREPTONIGRIN; LAVENDAMYCIN; DEGRADATION; DERIVATIVES; CONNECTION; METALATION; ANALOGS; AGENTS; DNA;
D O I
10.1021/ja207835w
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The synthesis of the potent antitumor agent (+/-)-streptonigrin has been achieved in 14 linear steps and 11% overall yield from ethyl glyoxalate. The synthesis features a challenging ring-closing metathesis reaction, followed by elimination and aromatization, to furnish a key pentasubstituted pyridine fragment.
引用
收藏
页码:16418 / 16421
页数:4
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