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:
Oct. 30, 2018
Filed:
Sep. 07, 2017
Applicant:
Mannkind Corporation, Westlake Village, CA (US);
Inventors:
John J. Stevenson, Bronx, NY (US);
Destardi Moye-Sherman, Newburgh, NY (US);
Assignee:
MannKind Corporation, Westlake Village, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 241/08 (2006.01); B01J 27/16 (2006.01);
U.S. Cl.
CPC ...
C07D 241/08 (2013.01); B01J 27/16 (2013.01);
Abstract
Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ε-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.