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。