Claims for Patent: 5,703,017

Summary for Patent: 5,703,017

Title:	3-(Het) arylcarboxylic acid derivatives, their preparation and intermediates for their preparation
Abstract:	3-(Het)arylcarboxylic acid derivatives of the formula I ##STR1## where R is formyl, CO2 H or a radical hydrolyzable to COOH and the other substituents have the following meanings: R2 and R3 are each halogen, alkyl, haloalkyl, alkoxy, haloalkoxy or alkylthio; X is nitrogen or CR14, where R14 is hydrogen or, together with R3, forms an alkylene or alkenylene chain, in each of which a methylene group is replaced by oxygen; R4 is phenyl or naphthyl, each of which is unsubstituted or substituted or an unsubstituted or substituted five-membered or six-membered heteroaromatic structure containing one to three nitrogen atoms or one sulfur or oxygen atom; R5 is hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, haloalkyl, alkoxyalkyl, alkylthioalkyl or phenyl; R6 is C1 -C8 -alkyl, C3 -C6 -alkenyl, C3 -C6 -alkynyl or C3 -C4 -cyclo-alkyl, each of which may be mono- or polysubstituted; Y is sulfur, oxygen or a single bond; and Z is sulfur or oxygen; with the proviso that R6 is not unsubstituted C1 -C4 -alkyl when R4 is unsubstituted phenyl, Z is oxygen and simultaneously R5 is methyl or hydrogen.
Inventor(s):	Ernst Baumann, Joachim Rheinheimer, Uwe Josef Vogelbacher, Matthias Bratz, Hans Theobald, Matthias Gerber, Karl-Otto Westphalen, Helmut Walter, Wilhelm Rademacher
Assignee:	Royalty Pharma Collection Trust
Application Number:	US08/537,843
Patent Claims: