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:
Feb. 28, 1984
Filed:
Apr. 26, 1982
Applicant:
Inventors:
Vincenzo Giobbio, Turin, IT;
Giorgio Ornato, Ivrea, IT;
Livio Buracchi, Ivrea, IT;
Alberto Mangia, Milan, IT;
Assignee:
Pierrel S.p.A., Naples, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2601 / ;
Abstract
A process for the removal of the formyl group in N-formylated peptides or their esters is described. The N-formyl compound is reacted with hydrazine or a substituted hydrazine of formula I: ##STR1## at a pH between 1 and 3.5, keeping the pH constant during the reaction. The process is particularly useful for the preparation of aspartam.