Cilostamide (68550-75-4) is a selective inhibitor of phosphodiesterase-3 (PDE3). Displays limited selectivity for PDE3A versus PDE3B (IC50 = 27 and 50 nM)1,2. Blocks PKB/Akt signaling pathway downstream via inhibition of Akt-activated PDE3B3. Cilostamide reverses the effect of leptin on food intake and body weight4.
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2) Christensen and Torphy et al. (1994), Isozyme-Selective Phosphodiesterase Inhibitors as Antiasthmatic Agents; Annu. Rep. Med. Chem., 29 185
3) Ahmad et al. (2000), Cyclic nucleotide phosphodiesterase 3B is a downstream target of protein kinase B and may be involved in regulation of effects of protein kinase B on thymidine incorporation in FDCP2 cells; J. Immunol., 164 4678
4) Zhao et al. (2002), A phosphatidylinositol 3-kinase phosphodiesterase 3B-cyclic AMP pathway in hypothalamic action of leptin on feeding; Nat. Neuroscience, 5 727