pde4 in 3

PDE4-IN-3 is a newly developed oral compound that acts as a potent inhibitor of the enzyme phosphodiesterase 4 (PDE4), displaying a high affinity for inhibition with an IC50 value of 4.2 nM.

1-pentyl-1H-indole-3-carboxylic acid is a naturally occurring indole alkaloid. It has a variety of biological activities, including anti-inflammatory, analgesic, antioxidant and antifungal, and antitumor activity. It acts by binding to various receptors and enzymes in the body, including serotonin receptors, cannabinoid receptors, PPARγ receptors and PDE4 enzymes.

PDE5-IN-13 (Compound 14b) inhibits phosphodiesterase 5 (PDE5A) with an IC50 of 3 nM and is applicable in pulmonary arterial hypertension research. It demonstrates high selectivity for its target compared to PDE1, PDE2, PDE3, PDE4, PDE7, PDE8, PDE9, PDE10, and PDE11, and it possesses oral bioavailability.

O-Demethyl apremilast is an active metabolite of the phosphodiesterase 4 (PDE4) inhibitor apremilast .1It inhibits the activity of PDE4 isolated from U937 cells and LPS-induced TNF-α production in isolated human peripheral blood mononuclear cells (PBMCs; IC50s = 8.3 and 5.6 μM, respectively). O-Demethyl apremilast is also an oxidative degradation product of apremilast.2,3 1.Hoffmann, M., Kumar, G., Schafer, P., et al.Disposition, metabolism and mass balance of [14C]apremilast following oral administrationXenobiotica41(12)1063-1075(2011) 2.Lu, Y., Shen, X., Hang, T., et al.Identification and characterization of process-related substances and degradation products in apremilast: Process optimization and degradation pathway elucidationJ. Pharm. Biomed. Anal.14170-78(2017) 3.Bhole, R.P., Naksakhare, S.R., and Bonde, C.G.A stability indicating HPTLC method for apremilast and identification of degradation products using MS/MSJ. Pharm. Sci. & Res.11(5)1861-1869(2019)

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].

Olprinone Hydrochloride, also known as Loprinone, is a phosphodiesterase (PDE) 3 potent inhibitor, exhibiting IC50 values of 150, 100, 0.35, and 14 μM for PDE1, PDE2, PDE3, and PDE4, respectively. It is utilized in heart failure research for its positive inotropic and vasodilative properties. It also exhibits anti-inflammatory activity [1] [2].

PDE4-IN-11 is a potent phosphodiesterase isoenzyme 4 (PDE4) inhibitor, exhibiting remarkable bronchodilatory and anti-inflammatory characteristics. It is specifically designed for studying obstructive or inflammatory airway diseases [1] [2] [3].