Abstract: The present invention relates to serotonin 5-HT6 receptor antagonists-novel substituted 3-sulfonyl-6,7,8,9-tetrahydropyrazolo[1,5-a]pyrido[4,3-e]pyrimidines and substituted 3-sulfonyl-5,6,7,8-tetrahydropyrazolo[1,5-a]pyrido[4,3-d]pyrimidines, drug substances and pharmaceutical compositions comprising drug substances as the mentioned above compounds and to the method of prophylaxis and treatment of various conditions and diseases of central nervous system in humans and warm-blooded animals pathogenesis of which is associated with serotonin 5-HT6 receptors. In formulas 1 and 2 Ar is optionally substituted aryl or optionally substituted heterocyclyl; R1 is hydrogen, optionally substituted lower C1-C3 alkyl, substituted hydroxyl group, substituted sulfanyl group; R2 is hydrogen or optionally substituted C1-C3 alkyl; R3 is hydrogen, optionally substituted C1-C3 alkyl or tert.-butyloxycarbonyl.

Abstract: The invention relates to serotonin 5-HT6 receptor antagonists—novel 2-amino-3-arylsulfonyl-6,7,8,9-tetrahydropyrazolo[1,5-a]pyrido[4,3-e]pyrimidines and substituted 2-amino-3-arylsulfonyl-5,6,7,8-tetrahydropyrazolo[1,5-a]pyrido[4,3-d]pyrimidines, drug substances and pharmaceutical compositions comprising the said drug substances as the said compounds, and also to method of prophylaxis and treatment of various diseases of central nervious system in humans and animals pathogenesis of which is associated with serotonin 5-HT6 receptors including cognitive and neurodegenerative diseases. Substituted 2-amino-3-arylsulfonyl-6,7,8,9-tetrahydropyrazolo[1,5-a]pyrido[4,3-e]pyrimidines of the general formula 1 and substituted 2-amino-3-arylsulfonyl-5,6,7,8-tetrahydropyrazolo[1,5-a]pyrido[4,3-d]pyrimidines of the general formula 2 and pharmaceutically acceptable salts and/or hydrates thereof.

Abstract: The invention relates to novel substituted indoles, to the use thereof in the form of pharmacological composition substances and to use of said composition for producing medicinal preparations used for preventing and treating viral diseases, in particular caused by viruses of infectious hepatitis (HCV, HBV), human immune deficiency (HIV), atypical pneumonia (SARS) and bird flu.

Abstract: The invention relates to novel substituted 8-sulfonyl-2,3,4,5-tetrahydro-1H-?-carbolines of the general formula 1 and their pharmaceutically acceptable salt—ligands exhibiting biological activity simultaneously towards alpha-adrenoceptors, dopamine receptors, histamine receptors, imidazoline receptors, sigma receptors, norepinefrine receptors, serotonin receptors, to active components, pharmaceutical compositions, comprising as an active component novel ligands, to novel medicaments intended for treatment of conditions and diseases of central nervous system. In the general formula 1 R1 represents a substituent selected from hydrogen, optionally substituted C1-C3 alkyl or C1-C4 alkyloxycarbonyl; R2 represents a cyclic system substituent selected from hydrogen, optionally substituted C1-C3 alkyl, optionally substituted C2-C3 alkenyl or substituted sulfonyl; R3 represents optionally substituted aryl or substituted amino group.

Abstract: The invention relates to novel substituted indoles, to the use thereof in the form of pharmacological composition substances and to use of said composition for producing medicinal preparations used for preventing and treating viral diseases, in particular caused by viruses of infectious hepatitis (HCV, HBV), human immune deficiency (HIV), atypical pneumonia (SARS) and bird flu.

Abstract: The invention relates to serotonin 5-HT6 receptor antagonists—novel 2-amino-3-arylsulfonyl-6,7,8,9-tetrahydropyrazolo[1,5-a]pyrido[4,3-e]pyrimidines and substituted 2-amino-3-arylsulfonyl-5,6,7,8-tetrahydropyrazolo[1,5-a]pyrido[4,3-d]pyrimidines, drug substances and pharmaceutical compositions comprising the said drug substances as the said compounds, and also to method of prophylaxis and treatment of various diseases of central nervious system in humans and animals pathogenesis of which is associated with serotonin 5-HT6 receptors including cognitive and neurodegenerative diseases. Substituted 2-amino-3-arylsulfonyl-6,7,8,9-tetrahydropyrazolo[1,5-a]pyrido[4,3-e]pyrimidines of the general formula 1 and substituted 2-amino-3-arylsulfonyl-5,6,7,8-tetrahydropyrazolo[1,5-a]pyrido[4,3-d]pyrimidines of the general formula 2 and pharmaceutically acceptable salts and/or hydrates thereof.

Abstract: The present invention relates to serotonin 5-HT6 receptor antagonists-novel substituted 3-sulfonyl-6,7,8,9-tetrahydropyrazolo[1,5-a]pyrido[4,3-e]pyrimidines and substituted 3-sulfonyl-5,6,7,8-tetrahydropyrazolo[1,5-a]pyrido[4,3-d]pyrimidines, drug substances and pharmaceutical compositions comprising drug substances as the mentioned above compounds and to the method of prophylaxis and treatment of various conditions and diseases of central nervous system in humans and warm-blooded animals pathogenesis of which is associated with serotonin 5-HT6 receptors. In formulas 1 and 2 Ar is optionally substituted aryl or optionally substituted heterocyclyl; R1 is hydrogen, optionally substituted lower C1-C3 alkyl, substituted hydroxyl group, substituted sulfanyl group; R2 is hydrogen or optionally substituted C1-C3 alkyl; R3 is hydrogen, optionally substituted C1-C3 alkyl or tert.-butyloxycarbonyl.