The present invention relates to a process for commercial production of octreotide using solution peptide chemistry and inexpensive amino acid derivatives. Thus the hexapeptide (Boc) D-Phe-Cys(Acm)-Phe-D-Trp-Lys(Boc)-Thr-OMe is synthesized by condensation of two tripeptide fragments, saponified and condensed with Cys(Acm)-Thr-OL to give the linear octapeptide alcohol. The linear peptide alcohol is treated with iodine, after removal of Boc groups, to give the cyclic peptide octreotide. The linear octapeptide alcohol can alternately be made by condensation of the protected hexapeptide acid with the dipeptide Cys(Acm)-Thr-OMe, followed by reduction with sodium borohydride.
本发明涉及一种使用溶液肽
化学和廉价
氨基酸衍
生物进行
奥曲肽商业生产的方法。因此,通过两个三肽片段的缩合合成六肽(Boc)D-Phe-Cys(Acm)-Phe-D-Trp-Lys(Boc)-Thr-OMe,经皂化和与Cys(Acm)-Thr-OL缩合后得到线性八肽醇。线性肽醇经去除Boc基团后,用
碘处理,得到环肽
奥曲肽。线性八肽醇也可以通过保护的六肽酸与二肽Cys(Acm)-Thr-OMe缩合,再用
硼氢化钠还原而制得。