Process for manufacture of 1-deamino-8-D-arginine vasopressin

摘要

A process for the manufacture of 1-deamino-8-D-arginine vasopressin (DDAVP) comprising, condensing a preparation of Mpa(R1)-Tyr-Phe-Gln-Asn-Cys(R2)-Pro-OH (SEQ ID NO: 1), where R1 and R2 are sulfhydryl-protecting groups, with the dipeptide (R3)-D-Arg(HCl)-Gly-NH2, where R3 is an acid-sensitive amino-protecting group, to form Mpa(R1)-Tyr-Phe-Gln-Asn-Cys(R2)-Pro-D-Arg(HCl)-Gly-NH2 (SEQ ID NO: 1), which is oxidized with iodine in a protic solvent. The reaction mixture containing the oxidized product can be purified by ion exchange chromatography on a cation exchange resin equilibrated with acid. Also disclosed is high-purity DDAVP obtained by this process and its use for treating diurea.