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    • 1. 发明申请
    • Processes for Preparing a Polypeptide
    • 制备多肽的方法
    • US20100234566A1
    • 2010-09-16
    • US12727653
    • 2010-03-19
    • Anup Kumar RayHiren Kumar V. PatelJohannes LudescherMariappan AnbazhaganMahendra R. PatelIngolf Macher
    • Anup Kumar RayHiren Kumar V. PatelJohannes LudescherMariappan AnbazhaganMahendra R. PatelIngolf Macher
    • C07K1/08
    • C08G69/10A61K38/00C07K14/001
    • The present invention relates to an improved process for preparing a polypeptide or pharmaceutically acceptable salt thereof comprising L-tyrosine, L-alanine, L-glutamate, and L-lysine. The polypeptide or pharmaceutically acceptable salt thereof is preferably glatiramer acetate. The process comprises: (a) polymerizing a mixture of N-carboxyanhydride of L-tyrosine, N-carboxyanhydride of L-alanine, N-carboxyanhydride of a protected L-glutamate and N-carboxyanhydride of a protected L-lysine, in a polar aprotic solvent in the presence of an initiator, to form a protected polypeptide; (b) admixing an acid with the protected polypeptide formed in Step (a) and a solvent, to form a product; and (c) admixing a substance selected from the group consisting of an alkali or alkaline earth metal hydroxide, a carbonate, a hydrogencarbonate, and mixtures thereof, with the product formed in Step (b), and a solvent or a mixture of a solvent and water, to form a deprotected polypeptide or a pharmaceuticaly acceptable salt thereof.
    • 本发明涉及制备包含L-酪氨酸,L-丙氨酸,L-谷氨酸和L-赖氨酸的多肽或其药学上可接受的盐的改进方法。 多肽或其药学上可接受的盐优选为醋酸格拉司他。 该方法包括:(a)将L-酪氨酸的N-羧酸酐,L-丙氨酸的N-羧酸酐,受保护的L-谷氨酸的N-羧酸酐和受保护的L-赖氨酸的N-羧酸酐的极性 在引发剂存在下的非质子溶剂,以形成受保护的多肽; (b)将酸与步骤(a)中形成的被保护的多肽和溶剂混合以形成产物; 和(c)将选自碱金属或碱土金属氢氧化物,碳酸盐,碳酸氢盐及其混合物的物质与步骤(b)中形成的产物和溶剂或溶剂的混合物 和水,以形成去保护的多肽或其药学上可接受的盐。
    • 5. 发明申请
    • Processes for Preparing a Polypeptide
    • 制备多肽的方法
    • US20100174048A1
    • 2010-07-08
    • US12727758
    • 2010-03-19
    • Anup Kumar RayHiren Kumar V. PatelJohannes LudescherMariappan AnbazhaganMahendra R. PatelIngolf Macher
    • Anup Kumar RayHiren Kumar V. PatelJohannes LudescherMariappan AnbazhaganMahendra R. PatelIngolf Macher
    • C07K1/06C07K2/00
    • C08G69/10A61K38/00C07K14/001
    • The present invention relates to an improved process for preparing a polypeptide or pharmaceutically acceptable salt thereof comprising L-tyrosine, L-alanine, L-glutamate, and L-lysine. The polypeptide or pharmaceutically acceptable salt thereof is preferably glatiramer acetate. The process comprises: (a) polymerizing a mixture of N-carboxyanhydride of L-tyrosine, N-carboxyanhydride of L-alanine, N-carboxyanhydride of a protected L-glutamate and N-carboxyanhydride of a protected L-lysine, in a polar aprotic solvent in the presence of an initiator, to form a protected polypeptide; (b) admixing an acid with the protected polypeptide formed in Step (a) and a solvent, to form a product; and (c) admixing a substance selected from the group consisting of an alkali or alkaline earth metal hydroxide, a carbonate, a hydrogencarbonate, and mixtures thereof, with the product formed in Step (b), and a solvent or a mixture of a solvent and water, to form a deprotected polypeptide or a pharmaceutically acceptable salt thereof.
    • 本发明涉及制备包含L-酪氨酸,L-丙氨酸,L-谷氨酸和L-赖氨酸的多肽或其药学上可接受的盐的改进方法。 多肽或其药学上可接受的盐优选为醋酸格拉司他。 该方法包括:(a)将L-酪氨酸的N-羧酸酐,L-丙氨酸的N-羧酸酐,受保护的L-谷氨酸的N-羧酸酐和受保护的L-赖氨酸的N-羧酸酐的极性 在引发剂存在下的非质子溶剂,以形成受保护的多肽; (b)将酸与步骤(a)中形成的被保护的多肽和溶剂混合以形成产物; 和(c)将选自碱金属或碱土金属氢氧化物,碳酸盐,碳酸氢盐及其混合物的物质与步骤(b)中形成的产物和溶剂或溶剂的混合物 和水,以形成去保护的多肽或其药学上可接受的盐。