Details for Patent: 5,500,413

Summary for Patent: 5,500,413

Title:	Process for manufacture of 1-deamino-8-D-arginine vasopressin
Abstract:	A process for the manufacture of 1-deamino-8-D-arginine vasopressin (DDAVP) comprising, condensing a preparation of Mpa(R.sup.1)-Tyr-Phe-Gln-Asn-Cys(R.sup.2)-Pro-OH (SEQ ID NO: 1), where R.sup.1 and R.sup.2 are sulfhydryl-protecting groups, with the dipeptide (R.sup.3)-D-Arg(HCl)-Gly-NH.sub.2, where R.sup.3 is an acid-sensitive amino-protecting group, to form Mpa(R.sup.1)-Tyr-Phe-Gln-Asn-Cys(R.sup.2)-Pro-D-Arg(HCl)-Gly-NH.sub.2 (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.
Inventor(s):	Larsson; Krister (Malmo, SE), Mellbrand; Thomas (Malmo, SE), Mornstam; Birgitta (Malmo, SE), Roschester; Jan (Lund, SE), Skoldback; Jan-Ake (Malmo, SE)
Assignee:	Ferring AB (Malmo, SE)
Application Number:	08/084,847
Patent Claim Types: see list of patent claims	Use; Compound;

Drugs Protected by US Patent 5,500,413

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate

International Family Members for US Patent 5,500,413

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	204296
Canada	2166297
China	1040648
China	1125952
Germany	69427985
Denmark	0710247
European Patent Office	0710247