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:
Apr. 13, 1982
Filed:
Jul. 11, 1977
Laszlo Feuer, Budapest, HU;
Arpad Furka, Budapest, HU;
Ferenc Sebestyen, Budapest, HU;
Jolan Hercsel nee Szepespataky, Budapest, HU;
Erzsebet Bendefy nee Dobay, Budapest, HU;
Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt., Budapest, HU;
Abstract
A process for preparing gamma-L-glutamyl-taurine, which has been found to be effective therapeutically through the control of vitamin A metabolism, which comprises reacting carbobenzyloxy-L-glutaminic acid-.alpha.-benzyl ester with triethylamine and isobutylchloroformate and then treating the reaction mixture with cystamine dihydrochloride to recover N,N'-bis-(N-carbobenzyloxy-gamma-[.alpha.-benzyl]-L-glutamyl)-cystamine. The latter is reacted with hydrogen peroxide in glacial acetic acid to produce carbobenzyloxy-gamma-(.alpha.-benzyl)-L-glutamyl taurine. The latter compound is treated with hydrogen bromide in glacial acetic acid to recover the gamma-(.alpha.-benzyl)-L-glutamyl taurine and this compound is treated with potassium hydroxide solution to yield the gamma-L-glutamyl taurine.