PDE2/PDE10-IN-1

• CAT Number: I020446
• CAS Number: 1426833-08-0
• Molecular Formula: C15H10ClN5
• Molecular Weight: 295.73
• Purity: ≥95%
• Synonyms: 3-(2-chlorophenyl)-7-methyl-2,4,5,8,12-pentazatricyclo[7.4.0.02,6]trideca-1(9),3,5,7,10,12-hexaene
• InChI: InChI=1S/C15H10ClN5/c1-9-14-19-20-15(10-4-2-3-5-11(10)16)21(14)13-8-17-7-6-12(13)18-9/h2-8H,1H3
• InChIKey: SNQXTEAQGLZIDL-UHFFFAOYSA-N
• SMILES: CC1=NC2=C(C=NC=C2)N3C1=NN=C3C4=CC=CC=C4Cl

PDE2/PDE10-IN-1 is a phosphodiesterase 2 (PDE2) and PDE10 inhibitor with IC50s of 29 and 480 nM, respectively.
PDE2/PDE10-IN-1 (Compound 6) inhibits PDE2 and PDE10, respectively, with an IC50 value of 29 and 480 nM. PDE2/PDE10-IN-1 also inhibits PDE11A and PDE4D with IC50s of 6920 nM and 5890 nM, respectively. In addition PDE2/PDE10-IN-1 does not show significant inhibition of a panel of CYP450 enzymes (CYP1A2, 2C9, 2D6, 2C19, and 3A4). PDE2/PDE10-IN-1 is also inactive up to a concentration of 125 μg/mL in a bacterial mutagenicity assay[1].
The PK properties of PDE2/PDE10-IN-1 are studied in rats after 2.5 mg/kg i.v. and 10 mg/kg p.o. administration. After i.v. administration, a rapid clearance is observed (t1/2=0.47 h), which is not expected based on the in vitro metabolic stability in rat liver microsomes (rLMs). Interestingly, PDE2/PDE10-IN-1 shows much slower clearance after p.o. administration (t1/2=2.36 h), resulting in good bioavailability and a maximum plasma concentration (Cmax) of 997 ng/mL. PDE2/PDE10-IN-1 is assessed for its potential to cross the blood–brain barrier in rats after 10 mg/kg s.c. administration. PDE2/PDE10-IN-1 shows good formulatability with 10 to 20% HPβCD at pH>3.5. The brain concentration for PDE2/PDE10-IN-1 after 1 h administration is in the range of 370-895 ng/g with high brain free fractions and brain/plasma ratios. More specifically, PDE2/PDE10-IN-1, which is orally bioavailable, occupies PDE2 with an ED50 of 21 mg/kg[1].

Reference

[1]. Rombouts FJ, et al. Pyrido[4,3-e][1,2,4]triazolo[4,3-a]pyrazines as Selective, Brain Penetrant Phosphodiesterase 2 (PDE2) Inhibitors. ACS Med Chem Lett. 2015 Jan 15;6(3):282-6.
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