申请人:WEN Yongjun
公开号:US20150299261A1
公开(公告)日:2015-10-22
An Eptifibatide preparation method with product purity of more than 99.5%, the method comprising: using a solid phase polypeptide synthesis method to prepare eptifibatide resin, conducting acidolysis on the Eptifibatide resin to obtain a crude Eptifibatide linear peptide product, oxidizing to obtain a crude Eptifibatide product, purifying and exchanging salt to obtain an Eptifibatide finished product; the method using the solid phase polypeptide synthesis method to prepare the eptifibatide resin is: using a solid phase coupling synthesis method to sequentially splice a corresponding protective amino acid or a segment in the following sequence onto amino resin, and obtaining the Eptifibatide resin: X—Y-Trp(R
1
)-Pro-Cys(R
2
)-amino resin, wherein R
1
is Boc or H, R
2
is Trt or Acm, X is Mpr(R
2
)-Harg(R
3
), R
3
is Pbf or H, and Y is Gly-Asp(OtBu).