(S)-PF-04449613 is the left-handed isomer of PF-04449613 . PF-04449613 is a selective PDE9A inhibitor with an IC50 of 22 nM. PF-04449613 improves motor learning ability in a mouse model.
References:
[1]. Claffey MM, et al. Application of structure-based drug design and parallel chemistry to identify selective, brain penetrant, in vivo active phosphodiesterase 9A inhibitors. J Med Chem. 2012 Nov 8;55(21):9055-68.
[2]. Lai B, et al. The Phosphodiesterase 9 Inhibitor PF-04449613 Promotes Dendritic Spine Formation and Performance Improvement after Motor Learning. Dev Neurobiol. 2018 Sep;78(9):859-872.
















