发明名称 |
Novel Process For The Preparation Of Leuprolide And Its Pharmaceutically Acceptable Salts Thereof |
摘要 |
The present invention relates to a novel process for the preparation of Leuprolide or its pharmaceutically acceptable salts thereof by solid and solution phase peptide synthesis (Hybrid approach). The present invention also relates to a process for the preparation of Leuprolide or its pharmaceutically acceptable salts thereof by synthesizing the peptide fragments by solid phase (7 and 5 amino acids fragment) and solution phase (2 and 4 amino acids fragment) respectively. The final solution phase condensation of these peptide fragments (7+2 and 5+4) led to a nonapeptide Leuprolide in the protected form. The present invention further relates to novel peptide fragements—Pyr-His(Trt)-Trp(Boc)-Ser(tBu)-Tyr(tBu)-DLeu-Leu-OH (Fragment-11); H-Arg(Pbf)-Pro-NHEt (Fragment-I11); Pyr-His(Trt)-Trp(Boc)-Ser(tBu)-Tyr(tBu)-DLeu-Leu-Arg(Pbf)-Pro-NHEt (Protected Leuprolide) (Fragment-IV); Pyr-His(Trt)-Trp(Boc)-Ser(tBu)-Tyr(tBu)-OH (Fragment-V); H-DLeu-Leu-Arg(Pbf)-Pro-NHEt (Fragment-VI) and process for the preparation thereof. |
申请公布号 |
US2013060004(A1) |
申请公布日期 |
2013.03.07 |
申请号 |
US201113696656 |
申请日期 |
2011.05.04 |
申请人 |
KUPPANNA ANANDA;KAMANA BULLI RAJU;VANJIVAKA SREELATHA;DATTA DEBASHISH |
发明人 |
KUPPANNA ANANDA;KAMANA BULLI RAJU;VANJIVAKA SREELATHA;DATTA DEBASHISH |
分类号 |
C07K1/10;C07K1/14;C07K7/08 |
主分类号 |
C07K1/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|