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. 12, 1977
Filed:
Apr. 27, 1976
Applicant:
Inventors:
Leonardo Marsili, Segrate, (Milan), IT;
Vittorio Rossetti, Melzo, (Milan), IT;
Carmine Pasqualucci, Milan, IT;
Assignee:
Archifar Industrie Chimiche del Trentino S.p.A., Rovereto, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 424244 ;
Abstract
Rifamycin compounds having high antibiotic activity, comprising rose-colored powders, water insoluble, but soluble in most of the organic solvents. Such compounds are obtained by reacting 3-amino-rifamycin S with gaseous ammonia in ethers and/or aromatic hydrocarbons at a temperature between 0.degree. C and +30.degree. C, stirring the mixture for at least 3 hours, and then isolating the compound thus obtained.