Abstract: A series of novel alkoxypyridin-4-yl and alkoxypyrimidin-4-yl derivatives of indol-3-ylalkylpiperazines of Formula I are intended to be useful agents ##STR1## for alleviation of vascular headache on the basis of their potent affinity and agonist activity at 5-HT1D binding sites.

Abstract: A series of serotonergic 5-cyclobutenedionylamino-substituted tryptamine derivatives of Formula I is disclosed for use in the alleviation of vascular headaches. ##STR1## The formula I substituents, as further defined in the specification, are: R.sup.1 is hydrogen, halogen, and alkyl; R.sup.2 and R.sup.3 can be hydrogen or alkyl; R.sup.4 is hydrogen, alkyl, acyl or alkylsulfonyl; m is 0 to 3 and n is 1 to 5; and X is amino, alkoxy, hydrogen, alkyl, aryl or alkylaryl.

Abstract: A series of acyclic amide derivatives of pyrimidinylpiperazines of Formula I ##STR1## wherein R.sup.1 is alkyl, phenalkyl, phenyl-hydroxyalkyl, phenyl and pyridinyl; R.sup.2 and R.sup.3 are hydrogen and alkyl; and R.sup.4 is hydrogen, halogen, and trifluoromethyl.Compounds of the invention can be incorporated into pharmaceutical compositions for use in enhancing cerebral function. The compounds are envisioned as being useful in restoration of cerebral function in degenerative disorders; in amnesia reversal; and in improvement of memory and learning processes.

Abstract: A series of novel indol-3-ylalkyl derivatives of alkoxypyrimidinylpiperazines are disclosed as Formula I. ##STR1## These compounds are intended to be useful agents for alleviation of vascular headache on the basis of their potent affinity and agonist activity at 5-HT1D binding sites.

Abstract: Certain 1-indolylalkyl-4-(alkoxypyrimidinyl)piperazines of Formula I are useful antidepressant agents. The ##STR1## substituents R.sup.1, R.sup.2 and R.sup.5 are hydrogen or lower alkyl; R.sup.3 and R.sup.4 are hydrogen, alkyl, alkoxy, alkythio, carboxamido, halo, or trifluoromethyl; R.sup.6 is alkoxy; and n is the integer 2 or 3.

Abstract: A series of 5-halopyrimidin-2-ylpiperazinylalkyl derivatives having useful anti-ischemic properties for treatment and prevention of dirorders resulting from brain and/or spinal cord anoxia.

Abstract: A series of 1,4-disubstituted piperazine derivatives comprised of indol-3-ylalkyl and substituted pyridin-2-yl substituent groups. These compounds are useful as antidepressant agents.

Abstract: A series of diazinylpiperidine compounds of Formula I ##STR1## wherein X is an ethylene chain or a 1,2-benzo ring; Y is carbonyl or methylene; R.sup.1 is hydrogen or lower alkyl; and Z is an R.sup.2, R.sup.3 -disubstituted diazinyl ring selected from pyridazine, pyrimidine, and pyrazine ring systems. Pharmacologic and neuroanatomical testing demonstrates that compounds of the series act to enhance cerebral function in mammals, particularly when there is a deficit in normal cerebral functioning. Specific pharmacologic test results indicate that compounds of Formula I possess cognition and memory enhancing activity.

Abstract: Psychotropic 1,3,4-oxadiazole compounds and their use as tranquilizers, analgesics and antidepressants.

Abstract: Disubstituted N,N-piperazinyl derivatives are disclosed wherein one substituent is a substituted pyridin-2-yl ring and the second substituent is a butylene chain attached to cyclic imide heterocycles such as azaspiro[4.5]decanedione, dialkylglutarimide, thiazolidinedione, spirocyclopentylthiazolidinedione, or morpholine-2,6-dione. The compounds have psychotropic properties and 2-[4-[4-(2,4-dioxo-1-thia-3-azaspiro[4.5]nonane-3-yl)butyl]-1-piperazinyl] -pyridine-3-carboxaldehyde is a typical embodiment having selective antipsychotic activity.

Abstract: Disubstituted 1,4-piperazinyl derivatives are disclosed wherein one substituent is a bicyclic fused-ring furo-, pyrrolo-, cyclopentadieno-, or thieno-pyridine heterocyclic system and the second substituent is an alkylene chain attached to cyclic imide heterocycles, such as azaspiro[4.5]decanediones, dialkylglutarimides, thiazolidinediones, succinimides, and morpholine-2,6-diones; or a benzylic carbinol moiety. These compounds have potent antipsychotic and serotonin antagonist activities. 4-[4-[4-(4-Furo[3,2-c]pyridinyl)-1-piperazinyl]butyl]-3,5-morpholinedione is an example of a typical embodiment having selective antipsychotic activity.

Abstract: A series of nootropic compounds of the following formula: ##STR1## and its pharmaceutically acceptable acid addition salts, wherein: R.sup.2 is hydrogen, lower alkyl, aryl which is optimally substituted, or hetaryl;R.sup.7 is hydrogen or is combined with R.sup.9 as a fused benzo-ring;R.sup.8 is hydrogen or lower alkyl; andR.sup.9 is lower alkyl, or R.sup.9 can be combined with R.sup.8 to give a 2-pyrrolidinone, a phthalimide, or isoindolone ring system.Pharmacological testing demonstrates that the series possesses cognition and memory enhancing actions and/or mild CNS simulation.

Abstract: 8-[4-[4-(1-Oxo-1,2-benzisothiazol-3-yl)-1-piperazinyl]butyl]-8-azaspiro[4.5 ]decane-7,9-dione is an antipsychotic agent having reduced side effect liability.

Abstract: Disubstituted N,N-piperazinyl derivatives are disclosed wherein one substituent is a substituted pyridin-2-yl ring and the second substituent is a butylene chain attached to cyclic imide heterocycles such as azaspiro[4.5]decanedione, dialkylglutarimide, thiazolidinedione, spirocyclopentylthiazolidinedione, or morpholine-2,6-dione. The compounds have psychotropic properties and 2-[4-[4-(2,4-dioxo-1-thia-3-azaspiro[4.5]nonane-3-yl)butyl]-1-piperazinyl] pyridine-3-carboxaldehyde is a typical embodiment having selective antipsychotic activity.

Abstract: 2-[3-[4-(3-Halophenyl)-1-piperazinyl]propyl]-5-(1-hydroxyethyl)-2,4-dihydro -[4-phenoxyalkyl-3H-1,2,4-triazol-3-ones and closely related compounds are psychotropic agents having promise as antidepressants by virtue of their receptor site binding affinity profiles and animal pharmacology.

Abstract: Disubstituted N,N-piperazinyl derivatives are disclosed wherein one substituent is a pyrimidin-2-yl ring and the other is a 4 carbon chain attached to a p-fluorophenyl ring at the terminal carbon. The terminal carbon of this butylene chain is also bonded to an oxygen atom as part of a carbonyl, carbinol, or ketal functionality. These compounds possess psychotropic properties, particularly atypical antipsychotic activity of good duration. By virtue of pre-clinical pharmacological testing, these compounds appear useful as potential antipsychotic agents which lack the typical movement disorder side-effects of standard antipsychotic agents.

Abstract: A series of non-opiate analgesics of Formula I ##STR1## wherein R.sup.1 is hydrogen, alkyl, aralkyl, or aryloxyalkyl; R.sup.2 is alkyl or hydrogen; and R.sup.3 and R.sup.4 are independently selected from hydrogen, alkyl, acyloxy, alkoxy, alkylthio, halogen, hydroxyl, or trifluoromethyl; or a pharmaceutically acceptable acid addition salt.

Abstract: Disubstituted N,N'-piperazinyl derivatives are disclosed wherein one substituent is heteroaryl and the other is alkylene attached to the ring nitrogen of substituted 2,5-pyrrolidinedion-1-yl moieties. The substitution pattern of the pyrrolidinedione ring involves either geminal disubstitution, including spiro ring fusion, or 3,4-phenyl ring fusion to give phthalimide derivatives. Heteroaryl substitution on the other piperazine nitrogen comprises pyridine, pyrimidine, and benzisothiazole ring systems. Representative examples of these compounds demonstrate useful central nervous system effects.

Abstract: 6-(1H-Tetrazol-5-yl)thiazolo[3,2-a]pyrimidin-5-ones, 3-(1H-tetrazol-5-yl)-4H-pyrimido[2,1-b]benzothiazol-4-ones, and the corresponding imidazo- and triazolo- pyrimidines, thiones, and imines are useful as antiallergy and antiasthmatic compounds by virtue of their inhibitory action on the immediate hypersensitivity reaction in mammals and relaxant action on the tracheal muscle. Intermediates in the synthesis of these substances from 2-aminoazoles and ethoxymethylene malononitrile also have smooth muscle relaxant and immediate hypersensitivity reaction inhibitory activity.

Abstract: Disubstituted N,N-piperazinyl derivatives are disclosed wherein one substituent is benzisothiazol-3-yl or benzisoxazol-3-yl and the other is alkylene attached to heterocycles such as azaspiro[4.5]decanedione, dialkylglutarimide, thiazolidinedione and spirocyclopentylthiazolidinedione or butyrophenone-like groups. The compounds have psychotropic properties and 8-[4-[4-(1,2-benzisothiazol-3-yl)-1-piperazinyl]butyl]-8-azaspiro[4.5]deca ne-7,9-dione is a typical embodiment having selective antipsychotic activity.