期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.2c01653
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资金
- JSPS KAKENHI [JP 19K06975]
- Natural Science Center for Basic Research and Development
The asymmetric total synthesis of angucycline antibiotics (S)-brasiliquinones B and C was achieved by constructing the benz[a]anthraquinone core through oxidative cyclization. The synthetic products confirmed the (S)-configuration of natural brasiliquinones.
The asymmetric total synthesis of angucycline antibiotics (S)-brasiliquinones B and C was accomplished. The benz[a]anthraquinone core was constructed via oxidative cyclization of a hydroquinone-silyl enol ether hybrid. The resultant pentacyclic acetal was converted to the silyl enol ether, which was treated with Pd(II)/O-2 to afford brasiliquinone C, after multistep conversion including dehydrogenation, desilylation and deacetalization, and hydroquinone oxidation. The (S)-configuration of natural brasiliquinones was confirmed based on the stereochemical correlation with the synthetic products.
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