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RADICAL-MEDIATED FIVE MEMBERED RING SYNTHESIS

RADICAL-MEDIATED FIVE MEMBERED RING SYNTHESIS
自由基介导的五元环合成
批准号:
3293197
负责人:
KEN S. FELDMAN
金额:
$12.53万
依托单位国家:
美国
项目类别:
财政年份:
1987
资助国家:
美国
项目状态:
已结题
起止时间:
1987-01-01 至 1989-12-31

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中文摘要
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英文摘要
Many therapeutically important natural products and pharmaceutical agents can be prepared from functionalized 1,2-dioxolane, cyclopentane, and tetrahydrofuran derivatives. The development of novel methodology for the efficient regio- and stereoselective syntheses of these ring systems is described. This methodology utilizes a radical-mediated addition of a two atom addend, such as molecular oxygen or a substituted alkene, across the carbon-carbon bond of a vinyl cyclopropane or vinyl oxirane to form the five-membered ring. Application of this chemistry to total syntheses of the antitumor antibiotic showdomycin and a portion of the antibiotic alborixin is planned.
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