Enantioselective synthesis of α-hydroxy-β-amino acids from α-amino acids mediated by sulfoxides
作者:Rubén Sánchez-Obregón、Fernando Salgado、Benjamín Ortiz、Eduardo Díaz、Francisco Yuste、Fernando Walls、José L. García Ruano
DOI:10.1016/j.tet.2007.07.072
日期:2007.10
available (S)-alanine derivatives is reported. The key step of the synthetic sequence is the conversion of γ-amino sulfoxides into γ-amino alcohols by treatment with TFAA and sym-collidine. The efficiency of this non-oxidative Pummerer reaction (NOPR) is dependent on the stereochemistry of the starting sulfoxide.
据报道,由市售的(S)-丙氨酸衍生物合成了光学纯的(2 S,3 S)-和(2 R,3 S)-3-氨基-2-羟基丁酸。合成顺序的关键步骤是γ氨基亚砜的通过用TFAA和治疗转化为γ-氨基醇符号-collidine。这种非氧化性Pummerer反应(NOPR)的效率取决于起始亚砜的立体化学。