Journal
MEDCHEMCOMM
Volume 5, Issue 9, Pages 1290-1296Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4md00113c
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PDE1 is a family of calcium-activated, dual substrate phosphodiesterases expressed in both the CNS and periphery that play a role in the integration of intracellular calcium and cyclic nucleotide signaling cascades. Exploration of the potential in targeting this family of enzymes to treat neuropsychiatric disorders has been hampered by a lack of potent, selective, and brain penetrable PDE1 inhibitors. To identify such compounds we used high-throughput screening, structure-based design, and targeted synthetic chemistry to discover the 4-aminoquinazoline 7a (PF-04471141) and the 4-indanylquinazoline 27 (PF-04822163) each of which are PDE1 inhibitors that readily cross the blood brain barrier. These quinazoline-based PDE1-selective inhibitors represent valuable new tools to study the biological processes regulated by PDE1 and to begin to determine the potential therapeutic utility of such compounds to treat neuropsychiatric disorders.
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