Process For Extraction Of Peptides And Its Application In Liquid Phase Peptide Synthesis
申请人:Monnaie Didier
公开号:US20140213759A1
公开(公告)日:2014-07-31
A process for extraction of a peptide from a reaction mixture resulting from a peptide coupling reaction, the reaction mixture containing the peptide and a polar aprotic solvent selected from the group consisting of N,N-dimethylformamide, N,N-dimethylacetamide and N-methyl-2-pyrrolidone, whereby the process includes a step a) and a step b): step a) including the addition of a component a1) and a component a2), whereby component a1) is 2-methyltetrahydrofuran and component a2) is water, to the reaction mixture, so that a biphasic system with an organic layer and an aqueous layer is obtained; step b) including the subsequent separation of the organic layer containing the peptide from the aqueous layer. In an embodiment, a combination of 2-methyltetrahydrofuran and an organic solvent 1 selected from the group consisting of n-heptane, toluene, ethylacetate, isopropylacetate, acetonitrile and tetrahydrofuran is used for the process for extraction. The extraction step is preferably used in a process for preparation of a peptide in liquid phase.
从肽偶联反应的反应混合物中提取肽的方法,所述反应混合物包含肽和从N,N-二甲基甲酰胺、N,N-二甲基乙酰胺和N-甲基-2-吡咯烷中选择的极性无质子溶剂,该过程包括步骤a)和步骤b):步骤a)包括向反应混合物中添加组分a1)和组分a2),其中组分a1)为2-甲基四氢呋喃,组分a2)为水,以获得具有有机层和水层的双相体系;步骤b)包括从水层中分离含有肽的有机层。在一种实施例中,使用由2-甲基四氢呋喃和从正庚烷、甲苯、乙酸乙酯、丙酮、四氢呋喃中选择的有机溶剂1组成的组合物进行提取过程。提取步骤最好用于液相肽制备过程中。