The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2005
Filed:
May. 15, 2003
Mukund S. Chorghade, Natick, MA (US);
Mukund K. Gurjar, Pune Maharashtra, IN;
Bhanu M. Chanda, Pune Maharashtra, IN;
Joseph Cherian, Kerala, IN;
Mukund S. Chorghade, Natick, MA (US);
Mukund K. Gurjar, Pune Maharashtra, IN;
Bhanu M. Chanda, Pune Maharashtra, IN;
Joseph Cherian, Kerala, IN;
Genzyme Corporation, Cambridge, MA (US);
Abstract
Non-natural amino acids such as 2-alkylated amino acids allow for the synthesis of a wider variety of peptidal and non-peptidal pharmaceutically active agents. A method of preparing a 2-alkylcysteine involves condensing cysteine with an aryl nitrile to form a 2-arylthiazoline-4-carboxylic acid, followed by alkylating the 2-arylthiazoline-4-carboxylic acid at the 4-position. The present invention also discloses a method of preparing a class of iron chelating agents related to desferrithiocin, all of which contain a thiazoline ring. In this method, an aryl nitrile or imidate is condensed with cysteine or a 2-alkyl cysteine.