Abstract: Compounds of formula (I), wherein R1 is as defined in the claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors. Methods of treatment and pharmaceutical dosage forms are also disclosed.

Abstract: The present disclosure relates to a process for the preparation of 4,5-dihydroxy-2-(4-methylbenzyl)isophthalonitrile, to use of a compound which is 2-methoxy-5-(4-methylbenzyl)phenol, (3-hydroxy-4-methoxyphenyl)(p-tolyl)methanone, 2-methoxy-5-(4-methylbenzoyl)phenyl 2-chloroacetate, 4-methylbenzoyl chloride, 2-methoxyphenyl 2-chloroacetate or 2-methoxyphenol in the preparation of 4,5-dihydroxy-2-(4-methylbenzyl)isophthalonitrile and to a compound which is 4-hydroxy-5-methoxy-2-(4-methylbenzyl)isophthalaldehyde dioxime or 4-hydroxy-5-methoxy-2-(4-methylbenzyl)isophthalaldehyde and use thereof in the preparation of 4,5-dihydroxy-2-(4-methylbenzyl)isophthalonitrile. 4,5-Dihydroxy-2-(4-methylbenzyl)isophthalonitrile is a COMT inhibitor.

Abstract: Compounds of formula (I), wherein R1 is as defined in the claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors. Methods of treatment and pharmaceutical dosage forms are also disclosed.

Abstract: Compounds of formula I, wherein A is an optionally substituted five-membered unsaturated heterocyclic ring containing 1, 2, or 3 N, O, or S ring heteroatom(s) exhibit alpha2C antagonistic activity and are thus useful for the treatment of diseases or conditions of the peripheric or central nervous system.

Abstract: Compounds of formula I, wherein A is an optionally substituted five-membered unsaturated heterocyclic ring containing 1, 2, or 3 N, O, or S ring heteroatom(s) exhibit alpha2C antagonistic activity and are thus useful for the treatment of diseases or conditions of the peripheric or central nervous system.

Abstract: Compounds of formula I, wherein Ra and Rb are as defined in the claims, exhibit alpha2C antagonistic activity and are thus useful as alpha2C antagonists.

Abstract: Compounds of formula (I), wherein R1 is as defined in the claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors. Methods of treatment and pharmaceutical dosage forms are also disclosed.

Abstract: Compounds of formula I, wherein A is an optionally substituted five-membered unsaturated heterocyclic ring containing 1, 2, or 3 N, O, or S ring heteroatom(s) exhibit alpha2C antagonistic activity and are thus useful for the treatment of diseases or conditions of the peripheric or central nervous system.

Abstract: Compounds of formula (I), wherein R1 is as defined in the claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors. Methods of treatment and pharmaceutical dosage forms are also disclosed.

Abstract: Compounds of formula (I), wherein R1 is as defined in the claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors. Methods of treatment and pharmaceutical dosage forms are also disclosed.

Abstract: Compounds of formula (I), wherein R1 is as defined in the claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors. Methods of treatment and pharmaceutical dosage forms are also disclosed.

Abstract: Compounds of formula (I) exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors.

Abstract: Compounds of formula (I), wherein R1-R4, X, Y and Z are as defined in claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors.

Abstract: Compounds of formula (I) exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors.

Abstract: Compounds of formula I? wherein the two —OH substituents in the phenyl moiety are in a position ortho to one another and R1 in a position ortho to one of the hydroxy groups; and X, R1 to R6 are as defined in disclosure. The compounds exhibit COMT enzyme inhibiting activity, so are useful as COMT inhibitors.

Abstract: Compounds of formula (I?), wherein A, R1 to R3 and t are as defined in the disclosure, exhibit COMT enzyme inhibiting activity so that they are useful as COMT inhibitors.

Abstract: Compounds of formula (I′) wherein the two OH— substituents in the phenyl moiety are in a position ortho to one another and R1 in a position ortho to one of the hydroxy groups; and X, R1 to R6 are as defined in claims, exhibit COMT enzyme inhibiting activity so that they are useful as COMT inhibitors.

Abstract: Therapeutically active compounds of formula (I): in which R1 to R4 means hydrogen, alkyl, alkenyl, aryl, arylalkyl, carboxyalkyl, hydroxyalkyl or halogenalkyl, or R2 and R3 form a ring of 5-7 carbon atoms, R5 to R9 means hydrogen, alkyl, alkenyl, aryl, arylalkyl, acyl, hydroxy, alkoxy, alkoxycarbonyl, amino, acylamino, alkylamino, aryloxy, halogen, cyano, nitro, carboxy, alkylsufonyl, sulfonamido or trifluoromethyl, wherein each aryl residue defined above by itself or as a part of another group may be substituted, and pharmaceutically acceptable salts and esters thereof. The compounds increase the calcium sensitivity of contractile proteins of the cardiac muscle and are thus useful in the treatment of congestive heart failure.

Abstract: Compounds of formula (I′), wherein A, R1 to R3 and t are as defined in the disclosure, exhibit COMT enzyme inhibiting activity so that they are useful as COMT inhibitors.

Abstract: Compounds of formula (I′) wherein the two OH— substituents in the phenyl moiety are in a position ortho to one another and R1 in a position ortho to one of the hydroxy groups; and X, R1 to R6 are as defined in claims, exhibit COMT enzyme inhibiting activity so that they are useful as COMT inhibitors.