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:
Dec. 31, 1991
Filed:
Apr. 10, 1989
Pierluigi Bissolino, S.Giorgio Lomellina, IT;
Marco Alpegiani, Milan, IT;
Ettore Perrone, Boffalora Ticino, IT;
Piergiuseppe Orezzi, Milan, IT;
Giuseppe Cassinelli, Voghera, IT;
Giovanni Franceschi, Milan, IT;
Farmitalia Carlo Erba S.r.l., Milan, IT;
Abstract
Compounds of formulae Ia and Ib ##STR1## wherein A is hydrogen atom or an organic residue, R.sup.1 is halogen atom, or an organic group, R.sup.2 is hydrogen or halogen atom, C.sub.1 -C.sub.4 alkyl or alkoxy group, R.sup.3 is hydrogen atom, C.sub.1 -C.sub.4 alkyl or alkoxy group, benzyl or a methylene group and R.sub.4 is an organic residue are disclosed. Compounds (Ia) and (Ib) are endowed with elastase inhibitory activity. A two-step process for their preparation starting from the corresponding 4-carboxy cephem or 3-carboxy penam is also provided.