pde4a

Enoximone is a selective inhibitor of phosphodiesterase III (PDE3), with treatment of congestive heart failure.

Roflumilast (APTA 2217) is an orally available, long-acting inhibitor of phosphodiesterase (PDE) type 4 (PDE4), with anti-inflammatory and potential antineoplastic activities. Upon administration, roflumilast and its active metabolite roflumilast N-oxide selectively and competitively bind to and inhibit PDE4, which leads to an increase of both intracellular levels of cyclic-3', 5'-adenosine monophosphate (cAMP) and cAMP-mediated signaling.

GSK356278 is an effective and selective inhibitor of phosphodiesterase 4 (PDE4), with pIC50s of 8.6, 8.8, and 8.7 for human PDE4A, PDE4B, and PDE4D, respectively. GSK356278 has anti-inflammatory, anxiolytic, and cognition-enhancing effects.

L-869298 is a potent and selective inhibitor of phosphodiesterase 4 (PDE4).

PF-06445974 has good selectivity for PDE4D, excellent brain permeability, and has a high level of specific binding in the "cold tracer" study.

LEO 39652, a dual-soft PDE4 inhibitor, demonstrates potent inhibition of PDE4 subtypes A, B, C, and D with respective IC50 values of 1.2 nM, 1.2 nM, 3.0 nM, and 3.8 nM. Additionally, it inhibits TNF-α with an IC50 of 6.0 nM, indicating its potential for topical Atopic dermatitis (AD) research [1].

CI-1044 is an inhibitor of PDE4 (IC50s: 0.29, 0.08, 0.56, 0.09 μM for PDE4A5, PDE4B2, PDE4C2 and PDE4D3).

UK-500001 is a potent PDE4 inhibitor with robust anti-inflammatory activity.

LEO-32731 is a bioactive chemical.

ML-030 is a potent and selective inhibitor of PDE4(PDE4A, PDE4A1, PDE4B1, PDE4B2, PDE4C1,and PDE4D2 with IC50 of 6.7 nM, 12.9 nM, 48.2 nM, 37.2 nM, 452 nM and 49.2 nM, respectively)

BC8-15 is a PDE inhibitor with IC50 values of 0.28 µM for PDE8A, 0.22 µM for PDE4A, and 6.46 µM for PDE7A. It enhances steroid production in mouse Leydig cells.

PDE4B-IN-6 (Compound 4i) is a potent and highly selective inhibitor of phosphodiesterase 4B (PDE4B) with an IC50 of 7.42 nM. As a roflumilast analogue, it exhibits significantly higher selectivity for PDE4B over PDE4A (IC50 = 1540 nM, ~195-fold) and PDE4C (IC50 = 1260 nM, ~169-fold). PDE4B-IN-6 exerts anti-inflammatory effects by elevating intracellular cAMP levels and suppressing the expression of the pro-inflammatory cytokine TNF-α. Additionally, it demonstrates good antioxidant properties and low cytotoxicity, making it suitable for research on chronic obstructive pulmonary disease (COPD) and related inflammatory conditions.

LASSBio-1632 is a novel anti-asthmatic lead candidate that selectively inhibits PDE4A and PDE4D isoenzymes, leading to the suppression of airway hyper-reactivity (AHR) and TNF-α production in lung tissue. With high experimental BBB permeability, LASSBio-1632 (7j) efficiently crosses the blood-brain barrier through passive diffusion [1].

Rolipram (SB 95952) is a phosphodiesterase 4 inhibitor with antidepressant properties.