Mitsunobu Approach to the Synthesis of Optically Active α,α-Disubstituted Amino Acids

被引:73
|
作者
Green, Jonathan E. [1 ,2 ]
Bender, David M. [2 ]
Jackson, Stona [2 ]
O'Donnell, Martin J. [1 ]
McCarthy, James R. [2 ]
机构
[1] Indiana Univ Purdue Univ, Dept Chem & Chem Biol, Indianapolis, IN 46202 USA
[2] Eli Lilly & Co, Lilly Corp Ctr, Indianapolis, IN 46285 USA
关键词
ENANTIOSELECTIVE SYNTHESIS; STEREOSELECTIVE-SYNTHESIS; ASYMMETRIC-SYNTHESIS; STEREOSPECIFIC SYNTHESIS; ALKYL-ARYL; REAGENT; ALCOHOLS; DESIGN; ETHERS;
D O I
10.1021/ol802325h
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Chiral tertiary alpha-hydroxy esters of known stereochemical configuration were transformed to a-azido esters by Mitsunobu reaction with HN3. Optimization of this reaction was shown to proceed at room temperature with high chemical yield using 1,1-(azodicarbonyl)dipiperidine (ADDP) and trimethylphosphine (PMe3). Complete inversion of configuration was observed at the a-carbon. Several alpha,alpha-disubstituted amino acids were synthesized in high overall chemical yield and optical purity.
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页码:807 / 810
页数:4
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