Quinolone- and 1,8-naphthyridin-4-one-carboxylic acids which are C-bonded in the 7-position

US4956465A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Michael Schriewer · Odenthal, DE
• Klaus Grohe · Odenthal, DE
• Uwe Petersen · Leverkusen, DE

Key dates

• Filing date: Oct 3, 1988
• Grant date: Sep 11, 1990
• Expiry date: Oct 3, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D215/56
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

As novel intermediates for antibacterials, the quinolone- and 1,8-naphthyridine-4-one-carboxylic acids which are C-bonded in the 7-position of the formula ##STR1## in which Y represents a carboxyl group, a nitrile group, an ester group --COOR.sup.3, or an acid amide group --CONR.sup.4 R.sup.5, where R.sup.3 stands for C.sub.1 -C.sub.4 -alkyl, PA0 X.sup.2 stands for hydrogen, nitro, alkyl having 1 to 3 carbon atoms and halogen, in particular PA0 R.sup.1 can be alkyl having 1-4 carbon atoms, vinyl, halogenoalkyl, hydroxyalkyl, cycloalkyl having 1-6 carbon atoms or optionally substituted phenyl, PA0 R.sup.2 stands for hydrogen, alkyl having 1-3 carbon atoms which is optionally substituted by halogen, alkoxy having 1-2 carbon atoms or nitro, phenyl and for a radical ##STR2## and Z.sup.1 and Z.sup.2 can each be hydrogen or various organic radicals or together form a ring, and salts and esters thereof.