A method for recovering an optically pure amino acid derivative from a waste liquor collected after a coupling reaction in peptide synthesis, comprising the steps of (a) adding into the waste liquor, in which an uncoupled amino acid derivative or an uncoupled small peptide fragment is contained, a compound selected from the group consisting of 1-hydroxybenzotriazole (HOBt), 1-hydroxy-7-azabenzotriazole (HOAt), 3-hydroxy-4-oxo-3,4-dihydro-1,2,3-benzotriazine (HOObt) and N-hydroxy-5-norbornen-2,3-dicarboxylic acid imide(HONB); (b) concentrating the waste liquor obtained in step (a); (c) treating a residue obtained in step (b) with an acidic buffer solution containing a tertiary amine; and (d) extracting and purifying the uncoupled amino acid derivative or the uncoupled small peptide fragment under acidic conditions.
一种从
多肽合成中偶联反应后收集的废液中回收光学纯
氨基酸衍
生物的方法,包括以下步骤 (a) 在废液中加入含有未偶联
氨基酸衍
生物或未偶联小肽片段的化合物、1-hydroxybenzotriazole (
HOBt)、1-hydroxy-7-azabenzotriazole (HOAt)、3-hydroxy-4-oxo-3,4-dihydro-1,2,3-benzotriazine (HOObt) 和 N-hydroxy-5-norbornen-2,3-dicarboxylic acid imide (HONB);(b) 浓缩步骤(a)中得到的废液; (c) 用含有叔胺的酸性缓冲溶液处理步骤(b)中得到的残留物;以及 (d) 在酸性条件下提取和纯化解偶联
氨基酸衍
生物或解偶联小肽片段。