Stereocontrol in the intramolecular addition of chromones to alpha-ketoester and alpha,beta-diketoester: syntheses of preussochromones and diversonolic ester
Stereocontrol in the intramolecular addition of chromones to alpha-ketoester and alpha,beta-diketoester: syntheses of preussochromones and diversonolic ester
批准号:
380321759
负责人:
Professor Dr. Ulrich Koert
金额:
$0.0万
依托单位国家:
德国
项目类别:
Research Grants
财政年份:
2017
资助国家:
德国
项目状态:
已结题
起止时间:
2016-12-31 至 2021-12-31
中文摘要
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英文摘要
Goal of the project is to investigate the stereoselective, intramolecular addition of chromones to alpha-ketoester and alpha,beta-diketoester. For the planned cyclizations to 5- and 6-membered rings the focus is on possibilities of substrate control by existing stereo centers and of catalyst control by chiral, chelating Lewis acids. Reference points for the proposed studies are the chromone natural products preussochromone A, D, E, F and the diversonolic ester alpha and beta.
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