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:
Sep. 19, 1989
Filed:
Oct. 13, 1987
Arnaldo Fravolini, Perugia, IT;
Patrizia Terni, Milan, IT;
Piergiuseppe Pagella, Isola S. Antonio, IT;
Mediolanum Farmaceutici Srl, Milan, IT;
Abstract
The invention relates to antibacterially active pyrido-benzothiazine derivatives with long-term action, having the following general formula: ##STR1## in which R is ##STR2## Where R.sup.1 is H, C.sub.1 -C.sub.6 alkyl, p-fluorophenyl, m-fluorophenyl, o-fluorophenyl or 2-pyridyl; or ##STR3## where R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 are lower alkyls. The invention also comprises the process for preparing compounds of general formula (I). Said process consists of a synthesis cycle using 2,4-difluoro-3-chloronitrobenzene and thiolactic acid as starting substances. The inventiona also comprises pharmaceutical compositions containing at least one of the compounds of general formula (I) as active principle.