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[摘要]:A three-step protocol for the highly diastereoselective (> 98%) synthesis of both (4R,5R)- and (4S,5S)-isocytoxazone from D-or L-tyrosine is reported. The diastereoselection was confirmed by X-ray crystallography. This synthesis is currently the highest yielding approach towards these enantiomerically pure biologically active oxazolidinones. |
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