The synthesis and SAR of novel highly potent and selective dopamine D(3)-receptor antagonists based on a 1H-pyrimidin-2-one scaffold are described. A-690344 antagonized PD 128907-induced huddling deficits in rat (ED(50) 6.1mg/kg po), a social interaction paradigm.

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http://dx.doi.org/10.1016/j.bmcl.2005.10.068DOI Listing

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