Abstract: A compound of formula (I) R1 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R2 is hydrogen, alkyl, hydroxyalkyl, alkylcarbonyloxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, cycloalkylalkyl, heterocyclylalkyl, aralkyl in which the aryl ring thereof is optionally fused to a 5-membered heterocyclic group or is optionally substituted by one or more substituents selected from alkoxy, amino, alkylamino, dialkylamino, acylamino, halogen, hydroxy, aminosulfonyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsufonylamino or dialkylaminosulfonylamino, R3 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R4 is hydrogen or alkyl, R5 is a quinolinyl, isoquinolinyl or oxodihydroisoquinolinyl group optionally fused to a 5-membered heterocyclic group and optionally substituted by one or more substituents selected from halogen, cyano, hydroxy, alkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, alkenyl, alkoxycarbonyl, alkynyl, carboxyl, acyl,

Abstract: Compounds of formula (I) in free or salt form, where Ar1 is phenyl substituted by one or more substituents selected from halogen, cyano, nitro, and C1–C8-alkyl optionally substituted by cyano or halogen, Ar2 is phenyl optionally which is unsubstituted or substituted by one or more substituents selected from halogen, cyano, hydroxy, nitro, C1–C8-alkyl, C1–C8-haloalkyl, C1–C8-alkoxy or C1–C8-alkoxycarbonyl, R1 is C1–C8-alkyl substituted by hydroxy, C1–C8-alkoxy, acyloxy, —N(R2)R3, halogen, carboxy, C1–C8-alkoxycarbonyl, phenyl-C1–C8-alkoxycarbonyl, —CON(R4)R5 or by a monovalent cyclic organic group, R2 and R?3 are each independently hydrogen or C1–C8-alkyl, or R2 is hydrogen and R3 is acyl or SO2R6, or R2 and R3 together with the nitrogen atom to which they are attached denote a 5- or 6-membered heterocyclic group, R4 and R5 are each independently hydrogen, C1–C8-alkyl optionally substituted by hydroxy or phenyl, or phenyl optionally substituted by C1–C8-alkyl, halogen, cyano or C1–C8-alkoxy, or R4 and R5 toge

Abstract: A compound of formula (I): R1 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R2 is hydrogen, alkyl, hydroxyalkyl, alkylcarbonyloxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, cycloalkylalkyl, heterocyclylalkyl, aralkyl in which the aryl ring thereof is optionally fused to a 5-membered heterocyclic group or is optionally substituted by one or more substituents selected from alkoxy, amino, alkylamino, dialkylamino, acylamino, halogen, hydroxy, aminosulfonyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonylamino or dialkylaminosulfonylamino, R3 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R4 is hydrogen or alkyl, R5 is a quinolinyl, isoquinolinyl or oxodihydroisoquinolinyl group optionally fused to a 5-membered heterocyclic group and optionally substituted by one or more substituents selected from halogen, cyano, hydroxy, alkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, alkenyl, alkoxycarbonyl, alkynyl, carboxyl, acyl,

Abstract: A compound of formula (I) R1 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R2 is hydrogen, alkyl, hydroxyalkyl, alkylcarbonyloxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, cycloalkylalkyl, heterocyclylalkyl, aralkyl in which the aryl ring thereof is optionally fused to a 5-membered heterocyclic group or is optionally substituted by one or more substituents selected from alkoxy, amino, alkylamino, dialkylamino, acylamino, halogen, hydroxy, aminosulfonyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonylamino or dialkylaminosulfonylamino, R3 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R4 is hydrogen or alkyl, R5 is a quinolinyl, isoquinolinyl or oxodihydroisoquinolinyl group optionally fused to a 5-membered heterocyclic group and optionally substituted by one or more substituents selected from halogen, cyano, hydroxy, alkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, alkenyl, alkoxycarbonyl, alkynyl, carboxyl, acyl,

Abstract: A compound of formula (I) R1 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R2 is hydrogen, alkyl, hydroxyalkyl, alkylcarbonyloxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, cycloalkylalkyl, heterocyclylalkyl, aralkyl in which the aryl ring thereof is optionally fused to a 5-membered heterocyclic group or is optionally substituted by one or more substituents selected from alkoxy, amino, alkylamino, dialkylamino, acylamino, halogen, hydroxy, aminosulfonyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonylamino or dialkylaminosulfonylamino, R3 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R4 is hydrogen or alkyl, R5 is a quinolinyl, isoquinolinyl or oxodihydroisoquinolinyl group optionally fused to a 5-membered heterocyclic group and optionally substituted by one or more substituents selected from halogen, cyano, hydroxy, alkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, alkenyl, alkoxycarbonyl, alkynyl, carboxyl, acyl,

Abstract: Compounds of formula (I) in free or salt form, where Ar1 is phenyl substituted by one or more substituents selected from halogen, cyano, nitro, and C1-C8-alkyl optionally substituted by cyano or halogen, Ar2 is phenyl optionally which is unsubstituted or substituted by one or more substituents selected from halogen, cyano, hydroxy, nitro, C1-C8-alkyl, C1-C8-haloalkyl, C1-C8-alkoxy or C1-C8-alkoxycarbonyl, R1 is C1-C8-alkyl substituted by hydroxy, C1-C8-alkoxy, acyloxy, —N(R2)R3, halogen, carboxy, C1-C8-alkoxycarbonyl, phenyl-C1-C8-alkoxycarbonyl, -CON(R4)R5 or by a monovalent cyclic organic group, R2 and R?3 are each independently hydrogen or C1-C8-alkyl, or R2 is hydrogen and R3 is acyl or SO2R6, or R2 and R3 together with the nitrogen atom to which they are attached denote a 5- or 6-membered heterocyclic group, R4 and R5 are each independently hydrogen, C1-C8-alkyl optionally substituted by hydroxy or phenyl, or phenyl optionally substituted by C1-C8-alkyl, halogen, cyano or C1-C8-alkoxy, or R4

Abstract: A compound of formula (I) 1

Abstract: Compounds of formula (I) in free or salt form, where Ar1 is phenyl substituted by one or more halogen atoms, Ar2 is phenyl or naphthyl which is unsubstituted or substituted by one or more substituents selected from halogen, cyano, hydroxy, nitro, C1-C8-alkyl, C1-C8-haloalkyl, C1-C8-alkoxy or C1-C8-alkoxycarbonyl, R1 is hydrogen or C1-C8-alkyl optionally substituted by hydroxy, C1-C8-alkoxy, acyloxy, N(R2)R3, halogen, carboxy, C1-C8-alkoxycarbonyl, —CON(R4)R5 or by a monovalent cyclic organic group, R2 and R3 are each independently hydrogen or C1-C8-alkyl, or R2 is hydrogen and R3 is acyl or —SO2R6, or R2 and R3 together with the nitrogen atom to which they are attached denote a 5 or 6-membered heterocyclic group, R4 and R5 are each independently hydrogen or C1-C8-alkyl, or R4 and R5 together with the nitrogen atom to which they are attached denote a 5 or 6-membered heterocyclic group, R6 is C1-C8-alkyl, C1-C8-haloalkyl, or phenyl optionally substituted by C1-C8-alkyl, and n is 1,

Abstract: Compounds of formula (I) in free or salt form, where Ar1 is phenyl substituted by one or more halogen atoms, Ar2 is phenyl or naphthyl which is unsubstituted or substituted by one or more substituents selected from halogen, cyano, hydroxy, nitro, C1-C8-alkyl, C1-C8-haloalkyl, C1-C8-alkoxy or C1-C8-alkoxycarbonyl, R1 is hydrogen or C1-C8-alkyl optionally substituted by hydroxy, C1-C8-alkoxy, acyloxy, N(R2)R3, halogen, carboxy, C1-C8-alkoxycarbonyl, —CON(R4)R5 or by a monovalent cyclic organic group, R2 and R3 are each independently hydrogen or C1-C8-alkyl, or R2 is hydrogen and R3 is acyl or —SO2R4 and R5 are each independently with the nitrogen atom to which they are attached denote a 5- or 6-membered heterocyclic group, R4 and R5 are each independently hydrogen or C1-C8-alkyl, or R4 and R5 together with the nitrogen atom to which they are attached denote a 5-6-membered heterocyclic group, R6 is C1-C8-alkyl, C1-C8-haloalkyl, or phenyl optionally substituted by C1-C8-alkyl, and n is 1, 2, 3, or 4,

Abstract: A compound of formula (I) in free or salt form, where R1 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R2 is hydrogen, alkyl, hydroxyalkyl, alkylcarbonyloxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, cycloalkylalkyl, heterocyclylalkyl, aralkyl in which the aryl ring thereof is optionally fused to a 5-membered heterocyclic group or is optionally substituted by one or more substituents selected from alkoxy, amino, alkylamino, dialkylamino, acylamino, halogen, hydroxy, aminosulfonyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsulfonylamino or dialkylaminosulfonylamino, R3 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R4 is hydrogen or alkyl, R5 is a quinolinyl, isoquinolinyl or oxodihydroisoquinolinyl group optionally fused to a 5-membered heterocyclic group and optionally substituted by one or more substituents selected from halogen, cyano, hydroxy, alkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, alkenyl, alkoxycarbonyl, a

Abstract: A polystyrene resin which is substituted in skeletal benzene rings thereof by a group of formula--CH.sub.2 --O--Ar.sup.1 --R Iwhere Ar.sup.1 is an unsubstituted or substituted phenylene group and R is a group of formula ##STR1## or a precursor group for a group of formula II, said precursor group being of formula--CH.dbd.N--NH--SO.sub.2 Ar.sup.2 IIIwhere Ar.sup.2 is an aryl group.