申请人:USV PHARMACEUTICAL CORPORATION
公开号:EP0180921A2
公开(公告)日:1986-05-14
Peptides, such as calcitonin, having two cysteine residues connected by a disulfide bond are prepared by a process which includes the step of cyclizing the cysteines at a pH of 8.5 to 9.0, and a concentration of 0.4 to 1.8 mg of peptide per ml of solution. These novel conditions produce rapid cyclization with an unforeseen improvement in yield.
在制备降钙素等多肽时,需要将两个半胱氨酸残基通过二硫键连接起来,其中包括在 pH 值为 8.5 至 9.0、每毫升溶液中含有 0.4 至 1.8 毫克多肽的条件下对半胱氨酸进行环化。 在这些新条件下,环化速度很快,产量也有了意想不到的提高。