Abstract: This invention relates to certain 5-HT4 receptor modulators, particularly 5-HT4 receptor antagonists, represented by Formula I: wherein Z is formula (A) or (B): wherein R1, R2, R3, R4, and R5 and the other substituents are as defined in the specification; or individual isomers, racemic or non-racemic mixtures of isomers, and pharmaceutically acceptable salts or solvates thereof. The invention further relates to pharmaceutical compositions containing such compounds and methods for their use as therapeutic agents.

Abstract: The present invention relates to novel 5-HT.sub.4 receptor ligands which are 1-(5-halo-4-aminophenyl) (C.sub.2-6)alkan-1-one derivatives in which the 5-halo-4-aminophenyl group is substituted at its 2-position with (C.sub.1-4)alkyloxy or phenyl(C.sub.1-4)alkyloxy and optionally substituted at its 3-position with (C.sub.1-4)alkyloxy or substituted at its 2- and 3-positions together with methylenedioxy or ethylenedioxy and the highest numbered carbon of the (C.sub.2-6)alkan-1-one is substituted with di(C.sub.1-4)alkylamino, morpholin-1-yl or pyrrolidin-1-yl or optionally substituted piperidin-1-yl, piperidin-4-yl, azacyclohept-1-yl, azabicyclo?2.2.1!hept-3-yl, azabicylo?2.2.2!oct-3-yl or azabicylo?3.2.2!non-3-yl; and the pharmaceutically acceptable salts, individual isomers and mixtures of isomers and methods of using and making such derivatives.

Abstract: Compounds of the Formula (I), (II), or (III): ##STR1## wherein the variables are as defined in the specification and the pharmaceutically acceptable salts thereof, exhibit useful pharmacological properties, and are particularly useful as angiotensin II antagonists.

Abstract: Compound of the Formula (I), (II), or (III): ##STR1## wherein: R.sup.1 is lower alkyl or 2"-(1H-tetrazol-5-yl)biphenyl-4'-ylmethyl;R.sup.2 is lower alkyl when R.sup.1 is 2"-(1H-tetrazol-5-yl)biphenyl-4'-ylmethyl; or R.sup.2 is 2"-(1H-tetrazol-5-yl)biphenyl-4'-ylmethyl when R.sup.1 is lower alkyl;R.sup.3 is hydrogen or lower alkyl;X is hydrogen, lower alkyl, halogen, --C(O)CF.sub.3, --CO.sub.2 R.sup.4, or --C(O)NR.sup.5 R.sup.6 ;Y is hydrogen, lower alkyl, lower alkoxy, hydroxy, halogen, or --CO.sub.2 R.sup.4 ;Z is hydrogen, lower alkyl, lower alkoxy, or halogen; with the proviso that Y and Z cannot be attached to the nitrogen atom in Formula (II); whereinR.sup.4 is hydrogen or lower alkyl;R.sup.5 is hydrogen or lower alkyl;R.sup.6 is hydrogen or lower alkyl; orR.sup.5 and R.sup.6 taken together with the nitrogen to which they are attached represent a heterocycle;and pharmaceutically acceptable salts thereof, exhibit useful pharmacological properties, and are particularly useful as angiotensin II antagonists.