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: Levosimendan solutions for pharmaceutical use, and particularly for intravenous administration. The solutions of the invention have enhanced stability and they are particularly useful as infusion or injection solutions or infusion concentrates. Levosimendan is 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: Levosimendan solutions for pharmaceutical use, and particularly for intravenous administration. The solutions of the invention have enhanced stability and they are particularly useful as infusion or injection solutions or infusion concentrates. Levosimendan is useful in the treatment of congestive heart failure.

Abstract: Levosimendan solutions for pharmaceutical use, and particularly for intravenous administration. The solutions of the invention have enhanced stability and they are particularly useful as infusion or injection solutions or infusion concentrates. Levosimendan is useful in the treatment of congestive heart failure.

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: 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, alkylsulfonyl, 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: A pyridazinyl derivative (I) and its use as a reference compound in the determination of potentially genotoxic impurities in levosimendan samples. An analytic method for the determination of potentially genotoxic impurities in levosimendan samples wherein (I) is used as a reference compound. Levosimendan is a medicament useful in the treatment of heart failure.

Abstract: The invention relates to the compounds of formula I: wherein one of X1 and X2 is MeSO2 and the other one is hydrogen or halogen and X3 is hydrogen or halogen. These compounds have been found to be useful in the prevention and the treatment of respiratory diseases, especially asthma, ARDS (Acute Respiratory Distress Syndrome), COPD (chronic obstructive pulmonary diseases), allergic rhinitis and related inflammatory conditions. More specifically, the invention relates to the use of said compound in the prevention and the treatment of asthma in steroid-resistant patients. The invention also relates to pharmaceutical formulations used in the treatment of said diseases.

Abstract: A compound of formula I ##STR1## wherein R.sub.1 is nitro, halogeno or cyano group and R.sub.2 is a group selected from ##STR2## wherein Y and Z are independently oxygen, sulfur or NR, wherein R is hydrogen, straight or branched C.sub.1-8 alkyl, C.sub.5-7 cycloalkyl, phenylC.sub.1-8 alkyl or phenyl group and X.sub.1 and X.sub.2 are NR, where R is hydrogen, straight or branched C.sub.1-8 alkyl, C.sub.5-7 cycloalkyl, phenylC.sub.1-8 alkyl or phenyl group, or a pharmaceutically acceptable salt or ester thereof. Pharmaceutical compositions are also disclosed.

Abstract: Diastereomeric intermediate salts of formulae (IIIa) or (IIIb) ##STR1## are prepared.

Abstract: Optically substantially pure (-) enantiomer of [[4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl]hydrazono)prop anedinitrile or pharmaceutically acceptable salt thereof, intermediates and a process for the preparation are described. The product is useful as a cardiotonic agent, antihypertensive and vasodilator for the treatment of congestive heart failure.

Abstract: Compounds of formula(I) ##STR1## wherein R.sub.1 is nitro, halo, cyano and R.sub.2 is a group selected from ##STR2## wherein Y is oxygen or sulfur; X.sub.1 is NR wherein R is hydrogen, C.sub.1-8 alkyl or phenyl and pharmaceutically acceptable salts thereof are useful in the prevention or treatment of tissue damage induced by lipid peroxidation.

Abstract: The invention concerns a method for the treatment of Parkinson's Disease. The method comprises administering a catechol-O-methyl-transferase inhibiting amount of a compound having the formula I ##STR1## wherein R.sub.1 and R.sub.2 independently represent hydrogen, alkylcarbamoyl of 2 to 5 carbon atoms or alkylcarbonyl of 2 to 5 carbon atoms, X represents nitro or cyano and R.sub.3 represents ##STR2## wherein R.sub.4 represents cyano or alkylcarbonyl of 2 to 5 carbon atoms and R.sub.5 represents cyano; alkylcarbonyl of 2 to 5 carbon atoms; or carbamoyl which is unsubstituted or substituted with alkyl of 1 to 8 carbon atoms, or hydroxyalkyl of 1 to 8 carbon atoms or pharmaceutically acceptable salts or esters thereof; and a sufficient amount of levodopa to treat Parkinson's Disease. A peripheral decarboxylase inhibitor such as carbidopa or benzerazide is also preferably administered.