Abstract: The present invention describes pyridazinone compounds of formula I which are cyclooxygenase (COX) inhibitors, and in particular, are selective inhibitors of cyclooxygenase-2 (COX-2), COX-2 is the inducible isoform associated with inflammation, as opposed to the constitutive isoform, cyclooxygenase-1 (COX-1) which is an important “housekeeping” enzyme in many tissues, including the gastrointestinal (GI) tract and the kidneys. The selectivity of these compounds for COX-2 minimizes the unwanted GI and renal side-effects seen with currently markered non-steroidal anti-inflammatory drugs (NSAIDs).

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: The present invention describes pyridazinone compounds of formula I which are cyclooxygenase (COX) inhibitors, and in particular, are selective inhibitors of cyclooxygenase-2 (COX-2). COX-2 is the inducible isoform associated with inflammation, as opposed to the constitutive isoform, cyclooxygenase-1 (COX-1) which is an important “housekeeping” enzyme in many tissues, including the gastrointestinal (GI) tract and the kidneys. The selectivity of these compounds for COX-2 minimizes the unwanted GI and renal side-effects seen with currently marketed non-steroidal anti-inflammatory drugs (NSAIDs).

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 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: The present invention describes pyridazinone compounds of formula I 1

Abstract: Compounds of formula (I) 1

Abstract: Compounds of formula (I) 1

Abstract: The present invention describes pyridazinone compounds of formula I 1

Abstract: Compounds of formula (I) compounds of formula (II) compounds of formula (III) and compounds of formula (IV) or pharmaceutically acceptable salts thereof are useful as H3 receptor antagonists. Processes to make the compounds and methods of treatment using the compounds are also disclosed.

Abstract: The present invention describes pyridazinone compounds of formula I 1

Abstract: The present invention describes pyridazinone compounds of formula I 1

Abstract: Compounds of formula (I) 1

Abstract: The present invention describes pyridazinone compounds of formula I which are cyclooxygenase (COX) inhibitors, and in particular, are selective inhibitors of cyclooxygenase-2 (COX-2). COX-2 is the inducible isoform associated with inflammation, as opposed to the constitutive isoform, cyclooxygenase-1 (COX-1) which is an important “housekeeping” enzyme in many tissues, including the gastrointestinal (GI) tract and the kidneys. The selectivity of these compounds for COX-2 minimizes the unwanted GI and renal side-effects seen with currently marketed non-steroidal anti-inflammatory drugs (NSAIDs).