The present invention relates to a liquid (or solution)-phase manufacturing process for preparing the decapeptide Degareiix, its amino-protected precursor, and other useful intermediates. The invention further relates to polypeptides useful in the solution-phase manufacturing process and to the purification of Degareiix itself. The manufacturing process comprises the step of cleaving the ε-amino protecting group Ρε from a Degareiix precursor according to formula P4)(Pε)Ac-AA1-AA10-NH2 in an organic solvent comprising the precursor and a cleaving agent dissolved therein: wherein P4 is a hydroxyl-protecting group or hydrogen, preferably hydrogen.
本发明涉及一种液相(或溶液)制造工艺,用于制备十肽Degareiix、其
氨基保护前体以及其他有用的中间体。本发明还涉及在溶液相制造过程中有用的
多肽以及Degareiix本身的纯化。制造过程包括从按照公式P4)(Pε)Ac-
AA1-
AA10-NH2的Degareiix前体中剪切ε-
氨基保护基Pε的步骤,在包含前体和溶解其中的剪切剂的有机溶剂中进行;其中P4是羟基保护基或氢,优选为氢。