| Literature DB >> 16930077 |
David Crich1, Abhisek Banerjee.
Abstract
An expedient synthesis of enantiomerically pure threo-beta-hydroxy-alpha-amino acid derivatives of phenylalanine, tyrosine, histidine, and tryptophan is described. The NBS-mediated radical bromination of the N,N-di-tert-butoxycarbonyl protected alpha-amino acids and subsequent treatment with silver nitrate in acetone provided the trans-oxazolidinones predominantly. Cesium carbonate catalyzed hydrolysis then generated the beta-hydroxy amino acid derivatives in excellent overall yield.Entities:
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Year: 2006 PMID: 16930077 PMCID: PMC2621330 DOI: 10.1021/jo061159i
Source DB: PubMed Journal: J Org Chem ISSN: 0022-3263 Impact factor: 4.354