Abstract: The present invention is directed to novel synthetic methods for preparing a compound of Structural Formula (I): wherein R is —H or a hydroxyl protecting group. Also included are synthetic intermediates described herein.

Abstract: A process for the preparation of compounds of formula (I) or a salt thereof wherein X1, X2, X3, X4, Rx, u, R2, R1g, z, and A1 are as defined in the specification is disclosed.

Abstract: Compounds of formula (I) are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: A process for the preparation of compounds of formula (I) or a salt thereof wherein X1, X2, X3, X4, Rx, u, R2, R1g, z, and A1 are as defined in the specification is disclosed.

Abstract: Compounds of formula (I) are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: Compounds of formula (I) are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: The present invention provides HCV polymerase inhibiting compounds having the formula (I): where R1 is cyclobutyl-N(Ra)—, n is 1, 2, 3 or 4, and at least one R5 is RaSO2N(Rj)alkyl-. In a non-limiting example, a compound of the present invention is N-[(3-{1-[(cyclobutyl)amino])-4-hydroxy -2-oxo-1,2-dihydro-quinolin-3-yl}-1,1-dioxo-1,4-dihydro-1?6-thieno[2,3-e][1,2,4]thiadiazin-7-yl)methyl]methane-sulfonamide. The present invention also features compositions comprising the compounds of the present invention or pharmaceutically acceptable salts, stereoisomers or tautomers thereof, and methods of using the same to treat or prevent HCV infection.

Abstract: Compounds of formula (I) are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: The present invention provides HCV polymerase inhibiting compounds having the formula (I): where R1 is cyclobutyl—N(Ra)-, n is 1, 2, 3 or 4, and at least one R5 is RaSO2N(Rj)alkyl-, In a non-limiting example, a compound of the present invention is N-[(3-{1-[(cyclobutyl)amino])-4-hydroxy -2-oxo-1,2-dihydro-quinolin-3-yl}-1,1-dioxo-1,4-dihydro-1?6-thieno[2,3-e][1,2,4]thiadiazin-7-yl)methyl]methane-sulfonamide. The present invention also features compositions comprising the compounds of the present invention or pharmaceutically acceptable salts, stereoisomers or tautomers thereof, and methods of using the same to treat or prevent HCV infection.

Abstract: Compounds of formula (I) are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: The present invention relates to salts of 2-(6-{2-[(2R)-2-methyl-1-pyrrolidin-1-yl]-ethyl}-2-naphthalen-2-yl)-2H-pyridazin-3-one, processes for their preparation, pharmaceutical compositions comprising such compounds, method of using them, and a process for preparing the active agent.

Abstract: Compounds of formula (I) are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: Compounds of formula (I) wherein R1 or R2 is an aromatic or non-aromatic ring directly joined or joined by a linker, as represented by L2 and L3, to a heteroaromatic core, and X, X?, Y, Y?, Z, Z?, R1, R2, R3, R3a, R3b, R4, R5, L, L2, and L3 are as defined herein, are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: Compounds of formula (I) wherein R1 or R2 is a tricyclic or bicyclic ring, each of which contains at least two heteroatoms, and R1, R2, R3, R3a, R3b, R4, R5, L, X, X?, Y, Y?, Z, and Z? are as defined herein, are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: Compounds of formula (I) wherein R1 or R2 is an aromatic or non-aromatic ring directly joined or joined by a linker, as represented by L2 and L3, to a heteroaromatic core, and X, X?, Y, Y?, Z, Z?, R1, R2, R3, R3a, R3b, R4, R5, L, L2, and L3 are as defined herein, are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: Compounds of formula (I) wherein R1 or R2 is an aromatic or non-aromatic ring directly joined or joined by a linker, as represented by L2 and L3, to a heteroaromatic core, and X, X?, Y, Y?, Z, Z?, R1, R2, R3, R3a, R3b, R4, R5, L, L2, and L3 are as defined herein, are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: The present invention relates to salts of 2-(6-{2-[(2R)-2-methyl-1-pyrrolidin-1-yl]-ethyl}-2-naphthalen-2-yl)-2H-pyridazin-3-one, processes for their preparation, pharmaceutical compositions comprising such compounds, method of using them, and a process for preparing the active agent.

Abstract: Compounds of formula (I) wherein R1 or R2 is a tricyclic or bicyclic ring, each of which contains at least two heteroatoms, and R1, R2, R3, R3a, R3b, R4, R5, L, X, X?, Y, Y?, Z, and Z? are as defined herein, are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands, methods for using such compounds and compositions, and a process for preparing compounds within the scope of formula (I).

Abstract: The present invention relates to processes for preparing amine substituted benzofurans, and more particularly 4-(2{2-[(2R)-2-methyl-1-pyrrolidinyl]ethyl}-1-benzofuran-5-yl)benzonitrile, and salts thereof. Compounds prepared by the processes of the invention have demonstrated activity as histamine-3 receptor ligands.

Abstract: The present invention relates to processes for preparing amine substituted benzofurans, and more particularly 4-(2-{2-[(2R)-2-methyl-1-pyrrolidinyl]ethyl}-1-benzofuran-5-yl)benzonitrile, and salts thereof. Compounds prepared by the processes of the invention have demonstrated activity as histamine-3 receptor ligands.