申请人:Jitsubo Co., Ltd.
公开号:EP3778621A1
公开(公告)日:2021-02-17
The present invention has an object of shortening the process time and reducing use of a poor solvent for solidifying a carrier (Tag)-peptide component, by removing impurities without conducting solid-liquid separation (condensation, solid-liquid separation and drying operation) of a Tag-peptide component, in an Fmoc method using a Tag for liquid phase peptide synthesis. Provided is the peptide synthesis method that includes the following steps a-d: step a: a carrier-protected amino acid, carrier-protected peptide, or a carrier-protected amino acid amide, and an N-Fmoc-protected amino acid or an N-Fmoc-protected peptide are condensed in an organic solvent or a mixed solution of organic solvents, to obtain an N-Fmoc-carrier-protected peptide, step b: a water-soluble amine is added to the reaction solution after the condensation reaction, step c: the Fmoc group is deprotected from the protected amino group in the presence of a water-soluble amine, and step d: the reaction solution is neutralized by adding an acid, and further, by adding and washing with an acidic aqueous solution, then, by liquid-liquid separation an aqueous layer is removed to obtain an organic layer.
本发明的目的是在使用 Tag 进行液相肽合成的 Fmoc 方法中,通过去除杂质而不对 Tag 肽组分进行固液分离(缩合、固液分离和干燥操作),从而缩短工艺时间并减少用于固化载体(Tag)-肽组分的劣溶剂的使用。所提供的多肽合成方法包括以下步骤 a-d:步骤 a:在有机溶剂或有机溶剂的混合溶液中缩合载体保护的氨基酸、载体保护的多肽或载体保护的氨基酸酰胺和 N-Fmoc 保护的氨基酸或 N-Fmoc 保护的多肽,得到 N-Fmoc 载体保护的多肽,步骤 b:步骤 c:在水溶性胺的存在下,将 Fmoc 基从受保护的氨基中脱除,步骤 d:加入酸中和反应溶液,并进一步加入酸性水溶液并用其洗涤,然后通过液-液分离除去水层,得到有机层。