Asymmetric synthesis of arylglycine amino acids using (S,S)-(+)-pseudoephedrine derived amides
作者:Jose L. Vicario、Dolores Badía、Esther Domínguez、Ana Crespo、Luisa Carrillo、Eneritz Anakabe
DOI:10.1016/s0040-4039(99)01475-6
日期:1999.9
Arylglycine aminoacids were obtained in good yields and with enantiomeric excesses higher than 99% by using an asymmetric amination reaction protocol on (S,S)-(+)-pseudoephedrine based arylacetamide enolates with di-tert-butylazodicarboxylate. Subsequent hydrazinolysis and hydrolysis yielded the target aminoacids.
Asymmetric Synthesis of Arylglycines and Their Use as Chiral Templates for the Stereocontrolled Synthesis of 7,8-Disubstituted 3-Aryl-1,2,3,4-tetrahydroisoquinolin-4-ols
作者:Eneritz Anakabe、Jose L. Vicario、Dolores Badía、Luisa Carrillo、Victoria Yoldi
obtained turned out to be excellent chiraltemplates for the production of chiral, nonracemic 7,8-disubstituted 3-aryl-1,2,3,4-tetrahydroisoquinolines, through use of a synthetic sequence involving: (1) reduction of the arylglycines to the parent arylglycinols, (2) N-benzylation with appropriately substituted aromatic aldehydes and (3) Swern oxidation followed by acid-catalysed cyclization of the obtained