A concise synthesis of α-amino acid N-carboxy anhydrides of (2S,3S)-β-substituted serines
作者:Claudio Palomo、Mikel Oiarbide、Iñaki Ganboa、José I Miranda
DOI:10.1016/s0040-4039(01)01766-x
日期:2001.12
A general access to 3-hydroxy-4-(1-hydroxyalkyl)-β-lactams with a C4–C1′ relative configuration unlike is provided. The subsequent oxidative ring expansion of the corresponding 3-hydroxy β-lactam smoothly affords an α-amino acid N-carboxy anhydride (NCA) formally derived from (2S,3S)-β-substituted serine, which upon sequential peptide coupling furnishes the tripeptide segment 2, present in lysobactin
提供了与C 4 –C 1 '相对构型不同的3-羟基-4-(1-羟基烷基)-β-内酰胺的一般途径。相应的3-羟基β-内酰胺的随后氧化扩环反应平稳地提供了正式衍生自(2 S,3 S)-β-取代丝氨酸的α-氨基酸N-羧基酸酐(NCA),在连续的肽偶联后可提供溶菌素中存在的三肽区段2。