Abstract
The 5-HT1A and 5-HT2A receptor affinity of model 1-(2-pyrimidinyl)-piperazine derivatives 15-21 and 23-32 has been determined. 2-(N-Methylpiperazino)-4,6-di(2-thienyl)pyrimidine 26 is a new, highly active and selective 5-HT2A receptor ligand. The topography of a molecule and the stereoelectronic effects of the thiophene rings are the major factors responsible for the high affinity and selectivity of 26 towards 5-HT2A sites.
MeSH terms
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Alkylation
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Animals
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Central Nervous System Agents / chemical synthesis*
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Central Nervous System Agents / pharmacology
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Models, Molecular
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Piperazines / chemical synthesis*
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Piperazines / pharmacology
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Radioligand Assay
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Rats
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Receptors, Serotonin / drug effects*
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Serotonin Antagonists / chemical synthesis*
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Serotonin Antagonists / pharmacology
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Structure-Activity Relationship
Substances
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Central Nervous System Agents
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Piperazines
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Receptors, Serotonin
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Serotonin Antagonists