A Simple and Rapid Protocol for<i>N</i>-Methyl-<i>α</i>-Amino Acids
作者:G. Vidyasagar Reddy、D.S. Iyengar
DOI:10.1246/cl.1999.299
日期:1999.4
A two step strategy for optically pure N-Protected-N-methyl-α-amino acids starting from N-protected-α-amino acids via reductive cleavage of oxazolidinones using NaCNBH3/TMSCl is described.
Mild regeneration of the carboxylic group of amino acid alkyl esters by aqueous methanolic sodium hydrogen carbonate via 5-oxazolidinones
作者:Pietro Allevi、Mario Anastasia
DOI:10.1016/j.tetlet.2003.08.028
日期:2003.10
A simple racemization-free procedure allows the regeneration of the carboxylic acid group of aminoacid alkyl esters by way of an intermediate 5-oxazolidinone which is hydrolyzed by treatment with sodium hydrogen carbonate in aqueous methanol.
Stanna-Brook Rearrangement of Carboxylic Acid Derivatives. Synthetic Utility and Mechanistic Studies
作者:M. Rita Paleo、M. Isabel Calaza、Paula Graña、F. Javier Sardina
DOI:10.1021/ol049826m
日期:2004.3.1
[reaction: see text] The reaction of R(3)SnLi with carboxylic acid derivatives proceeds through a novel, very fast stanna-Brook rearrangement that generates alpha-alkoxyorganolithium compounds as intermediates. The outcome of these reactions depends on the nature of the carboxyl derivatives. Reaction of R(3)SnLi with ester derivatives gives rise to coupled products through a novel C-C bond formation
A Novel Synthesis of Oxazolidin-5-one Under Basic Condition
作者:Sukhen Karmakar、Debendra K. Mohapatra
DOI:10.1055/s-2001-16035
日期:——
A simple and practical synthesis of oxazolidin-5-one is described under basic condition.
在基本条件下,描述了简单实用的5-氧氮杂环-2-酮合成方法。
Orthogonally protected bifunctional amino acid
申请人:Schering AG
公开号:EP1717219A1
公开(公告)日:2006-11-02
The present invention concerns novel orthogonally protected amino acids, there production and use for the synthesis of binding compounds usable in the diagnosis and treatment of proliferative diseases, in particular tumor diseases.