silylamination of α,β-unsaturated esters with silylboranes and hydroxylamines has been developed to afford the corresponding β-silyl-α-amino acidderivatives, which are of great interest in medicinal and pharmaceutical chemistry. Additionally, by using a suitable chiral bisphosphine ligand, the asymmetricinduction is possible, delivering the optically active β-silyl-α-amino acids with synthetically
Walder, Chemische Berichte, 1886, vol. 19, p. 1627
作者:Walder
DOI:——
日期:——
[EN] ASYMMETRIC SYNTHESIS OF (-)-AGELASTATIN A<br/>[FR] SYNTHESE ASYMETRIQUE DE L'(-)-AGELASTATINE A
申请人:UNIV TEMPLE
公开号:WO2006055578A2
公开(公告)日:2006-05-26
[EN] The total asymmetric synthesis of the cytotoxic marine metabolite (-)-agelastatin A (1) has been achieved from the C-ring intermediate 4,5-diamino cyclopenten-2-enone (-)-2. This key intermediate was efficiently prepared from the sulfinimine-derived a,ß-diamino ester 4 using ring closing metathesis. [FR] La synthèse asymétrique totale du métabolite marin cytotoxique l'(-)-agelastatine A (1) a été obtenue à partir du produit intermédiaire à cycle en C le 4,5-diamino cyclopentène-2-one (-)-2. Ce produit intermédiaire clé a été efficacement préparé à partir du a,ß-diamino ester 4, dérivé de la sulfinimine, par métathèse de fermeture de cycle.