Structural highlights
Function[PDE10_HUMAN] Plays a role in signal transduction by regulating the intracellular concentration of cyclic nucleotides. Can hydrolyze both cAMP and cGMP, but has higher affinity for cAMP and is more efficient with cAMP as substrate.[1] Publication Abstract from PubMedThe identification of highly potent and orally active triazines for the inhibition of PDE10A is reported. The new analogs exhibit low-nanomolar potency for PDE10A, demonstrate high selectivity against all other members of the PDE family, and show desired drug-like properties. Employing structure-based drug design approaches, we investigated the selectivity of PDE10A inhibitors against other known PDE isoforms, by methodically exploring the various sub-regions of the PDE10A ligand binding pocket. A systematic assessment of the ADME and pharmacokinetic properties of the newly synthesized compounds has led to the design of drug-like candidates with good brain permeability and desirable drug kinetics (t(1/2), bioavailability, clearance). Compound 66 was highly potent for PDE10A (IC(50)=1.4nM), demonstrated high selectivity (>200x) for the other PDEs, and was efficacious in animal models of psychoses; reversal of MK-801 induced hyperactivity (MED=0.1mg/kg) and conditioned avoidance responding (CAR; ID(50)=0.2mg/kg). Novel triazines as potent and selective phosphodiesterase 10A inhibitors.,Malamas MS, Stange H, Schindler R, Lankau HJ, Grunwald C, Langen B, Egerland U, Hage T, Ni Y, Erdei J, Fan KY, Parris K, Marquis KL, Grauer S, Brennan J, Navarra R, Graf R, Harrison BL, Robichaud A, Kronbach T, Pangalos MN, Brandon NJ, Hoefgen N Bioorg Med Chem Lett. 2012 Sep 15;22(18):5876-84. Epub 2012 Jul 31. PMID:22902656[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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