Patent ID: 6949567

Claim:
A compound of the formula (I) or a salt thereof, where Y is C═O, C═S, C═NH, (C═O) 2 or SO 2 (A) and (B) are each independently a phenyl group R 1 is where R a and R c are each independently hydrogen, —O—(CO)—R′ (where R′ is as defined above), hydroxyl, hydroxyalkyl, haloalkyl, aminoalkyl, alkoxy, cyanoalkyl, alkyl or an unsaturated or saturated carbocyclic group selected from the group consisting of cyclopentyl, cyclohexyl, aryl, heteroaryl; R b is an optional substituent which may be independent of R a and R c and may be selected from the group as defined above for R a and R c ; R d is hydrogen or one of the following groups: —(CO)—R e where R e is independently hydrogen, alkoxy, alkylthio, halogen, haloalkyl, haloalkyloxy, hydroxyalkyl, hydroxyalkylamino, alkyl, aryl, heteroaryl, amino, aminoalkyl or alkylamino group; —(CH 2 ) n -R f where R f is independently hydrogen, a hydroxy-alkyl, an alkyl, an allyl, an amino, an alkylamino, a morpholino, 2-tetrahydrofuran, N-pyrrolidino, a 3-pyridyl, a phenyl, a benzyl, a biphenyl or another heterocyclic group and n is 0, 1, 2 or 3; —NR a R b where R a and R b are defined above; or R a forms together with R d a 5- or 6- membered unsaturated or saturated heterocyclic ring which optionally has 0 to 3 substituents R″; the dotted line means a double bond unless there is a substituent R b , in the formula of R 1 as defined above; R″ is independently hydrogen, alkoxy, alkylthio, aminoalkyl, halogen, —CO 2 R′, —CR′O, haloalkyl, haloalkyloxy, —NO 2 , —CN, hydroxyalkyl, alkyl, aryl, heteroaryl, amino, alkylamino or aminoalkyl group or a double bonded oxygen, wherein R′ is as defined above; R 2 is a hydrogen, a halogen, alkoxy, alkylthio, —CO 2 R′, —CR′O, haloalkyl, haloalkyloxy, —NO 2 , —CN, hydroxy, hydroxyalkyl, alkyl, aryl, amino, alkylamino or an aminoalkyl group; R 3 is a hydrogen, a halogen, haloalkyl, —NO 2 , —CN, an alkyl or an aryl group; R 4 is a hydrogen or a group capable of hydrogen bond formation except for a group as defined for substituent R 1 ; R 5 is hydrogen or, independently of R 4 , a group selected from the groups as defined above for R 4 ; R 6 is hydrogen or, independently of R 2 , a group selected from the groups as defined above for R 2 ; and with the proviso that a compound of the formula (I) is not a compound (a) in which Y is equal to C═O, both (A) and (B) are a phenyl group, and R 1 is the group where R 1 ′ is hydrogen or phenyl, R 2 , R 3 , R 5 , and R 6 are identical and are hydrogen and R 4 is phenyl, benzyl, phenoxy, chloro or a dimethylamino group in the 3- or 4-position to the NH—Y—NH group of formula(I); or (b) in which (A) and (B) are phenyl and R 4 , R 5 or R 6 are in the ortho-position to the NH—Y—NH group of formula (I).