发明名称 |
METHOD FOR PURIFYING SOLID-PHASE SYNTHETIC CRUDE LIRAGLUTIDE |
摘要 |
The present invention relates to the field of biomedicine, and in particular, to a method for purifying solid-phase synthetic crude liraglutide. The method comprises: dissolving solid-phase synthetic crude liraglutide in an aqueous acetonitrile solution to obtain a crude peptide solution; and obtaining liraglutide with high purity and high yield through four-step HPLC purification. |
申请公布号 |
US2015051372(A1) |
申请公布日期 |
2015.02.19 |
申请号 |
US201314377536 |
申请日期 |
2013.01.29 |
申请人 |
HYBIO PHARMACEUTICAL CO., LTD. |
发明人 |
Qin Liangzheng;Pan Junfeng;Ma Yaping;Yuan Jiancheng |
分类号 |
C07K14/605;C07K1/16;B01D15/18 |
主分类号 |
C07K14/605 |
代理机构 |
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代理人 |
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主权项 |
1. A method for purifying crude liraglutide obtained from solid-phase synthesis, which is characterized by comprising the following steps:
(a) a solution of crude liraglutide is obtained by dissolving crude liraglutide obtained from solid-phase synthesis in aqueous acetonitrile solution; (b) the solution of crude liraglutide is subjected to a first HPLC purification using octylsilane bonded silica as stationary phase, and using aqueous isopropanol solution containing 0.1-0.2% trifluoroacetic acid as mobile phase A and acetonitrile containing 0.1-0.2% trifluoroacetic acid as mobile phase B eluting at a linear gradient from 20-40% B to 40-60% B, and target peak is collected as the first fraction; (c) the first fraction is subjected to a second HPLC purification using cyanosilane bonded silica as stationary phase, and using 0.05-0.15% (mass concentration) aqueous perchloric acid solution as mobile phase A and 0.05-0.15% (mass concentration) perchloric acid in acetonitrile as mobile phase B eluting at a linear gradient from 40% B to 70% B, and target peak is collected as the second fraction; (d) the second fraction is subjected to a third HPLC purification using octylsilane bonded silica as stationary phase, and using 0.01-0.06% (mass concentration) aqueous ammonia solution as mobile phase A and acetonitrile of chromatographic grade as mobile phase B eluting at a linear gradient from 30% B to 60% B, and target peak is collected as the third fraction; and (e) purified liraglutide is obtained from the third fraction by rotatory evaporation under reduced presser and lyophilization. |
地址 |
Shenzhen CN |