Arofylline is a PDE4 inhibitor as a potential treatment for asthma.
Olprinone Hcl(Loprinone Hcl) is a selective phosphodiesterase 3 (PDE3) inhibitor. IC50 value:Target: PDE3Olprinone is used as cardiotonic agent with positive inotropic and vasodilating effects. Olprinone has been reported to improve microcirculation and attenuate inflammation. Olprinone is often used to increase cardiac output after cardiopulmonary bypass (CPB). Olprinone was infused at a rate of 0.2 μg/kg/min when weaning from CPB was started. Olprinone has also shown potent antioxidative and anti-inflammatory effects in the meconium-induced oxidative lung injury.
BPN14770 is a selective phosphodiesterase 4D (PDE4D) allosteric inhibitor with IC50s of 7.8 nM and 7.4 nM for PDE4D7 and PDE4D3 (two different dimeric forms of PDE4D), respectively[1].
Oglemilast(GRC3886) is a potent PDE4 inhibitor, under clinical studies in the treatment of allergen-induced asthma.IC50 value:Target: PDE4
PDE5-IN-2 is a potent, highly selective, and orally active PDE5 inhibitor, with an IC50 of 0.31 nM, less potently inhibits PDE2A, PDE10A, PDE4D2, and PDE6C, with IC50s of 106, 46, 43, 1.2 nM, respectively. Anti-pulmonary arterial hypertension activity[1].
BC11-38 is a potent, selective, and biologically active PDE11 inhibitor, with IC50s of 0.28 µM and >100 µM for PDE11 and PDE1-10, respectively. BC11-38 elevates cAMP levels, PKA-mediated ATF-1 phosphorylation, and cortisol production in H295R cells[1].
Enpp-1-IN-6 is a potent inhibitor of ectonucleotide pyrophosphatase-phosphodiesterase 1 (enpp-1). The ENPP 1 has broad specificity and can cleave a variety of substrates, including phosphodiester bonds of nucleotides and nucleotide sugars and pyrophosphate bonds nucleotides and nucleotide sugars. Enpp-1-IN-6 has the potential for the research of cancer and infectious diseases (extracted from patent WO2021203772A1, compound 51)[1].
Sophoflavescenol is a prenylated flavonol, which shows great inhibitory activity with IC50 of 0.013 μM against Phosphodiesterase 5 (PDE5), and also inhibits RLAR, HRAR, AGE, BACE1, AChE and BChE with IC50s of 0.30 µM, 0.17 µM, 17.89 µg/mL, 10.98 µM, 8.37 µM and 8.21 µM, respectively.
Phosphodiesterase II, namely phosphodiesterase 2, is mainly involved in the hydrolysis of the important second messengers cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP), and is often used in biochemical research. Phosphodiesterase II is expressed in a variety of tissues, such as the adrenal medulla, brain, heart, platelets, macrophages and endothelial cells, and is involved in the regulation of many different intracellular processes[1].
Roflumilast Impurity E is the impurity of Roflumilast. Roflumilast(Daliresp) is a drug which acts as a selective and long-acting inhibitor of the enzyme PDE-4 with an IC50 value of 0.8 nM.
Robustine, a furoquinoline alkaloid, from Dictamnus albus, exhibits inhibitory potency against human phosphodiesterase 5 (hPDE5A) in vitro[1].
Dipyridamole-d20 is the deuterium labeled Dipyridamole. Dipyridamole is a phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells[1][2][3].
Nortadalafil is demethyl Tadalafil, which is a PDE5 inhibitor, currently marketed in pill form for treating erectile dysfunction (ED) under the name Cialis; and under the name Adcirca for the treatment of pulmonary arterial hypertension.IC50 value:Target:
PDE5/HDAC-IN-1 (Compound 26) is a potent phosphodiesterase 5 (PDE5) and HDAC inhibitor with IC50 values of 46.3 nM and 14.5 nM, respectively. PDE5/HDAC-IN-1 induces cell apoptosis and shows anticancer activities[1].
8-CPT-Cyclic AMP (8-CPT-cAMP) sodium is a selective activator of cyclic AMP-dependent protein kinase (PKA). 8-CPT-Cyclic AMP sodium is also a potent inhibitor of the cyclic GMP-specific phosphodiesterase (PDE VA) with an IC50 of 0.9 μM. 8-CPT-Cyclic AMP sodium also inhibits PDE III and PDE IV with IC50Epac and is a potent Epac activator[1][2].
ML-030 is a potent PDE4 inhibitor, with IC50 of 6.7 nM, 12.9 nM, 48.2 nM, 37.2 nM, 452 nM and 49.2 nM for PDE4A, PDE4A1, PDE4B1, PDE4B2, PDE4C1,and PDE4D2, respectively.
Homo Sildenafil-d5 is the deuterium labeled Homo Sildenafil. Homo Sildenafil, an analog of Sildenafil, acts as a phosphodiesterase inhibitor[1][2].
ER21355 is an inhibitor of phosphodiesterase 5 (PDE5), used for treatment of prostatic diseases.
ent-Tadalafil (ent-IC-351), compound (6S,12aS), is a inactive cis-enantiomer of compound (6R,12aS). compound (6R,12aS) is a potent PDE5 inhibitor with an IC50 of 0.090 μM, while ent-Tadalafil is inactive at concentrations up to 10 µM[1].
Enpp-1-IN-13 (Compound 1a) is an ectonucleotide pyrophosphatase/phosphodiesterase (ENPP) inhibitor with IC50 values of 1.29 μM and 20.2 μM against ENPP1 and ENPP3, respectively. Enpp-1-IN-13 shows anticancer activity[1].
Olprinone(Loprinone) is a selective phosphodiesterase 3 (PDE3) inhibitor. IC50 value:Target: PDE3Olprinone is used as cardiotonic agent with positive inotropic and vasodilating effects. Olprinone has been reported to improve microcirculation and attenuate inflammation. Olprinone is often used to increase cardiac output after cardiopulmonary bypass (CPB). Olprinone was infused at a rate of 0.2 μg/kg/min when weaning from CPB was started. Olprinone has also shown potent antioxidative and anti-inflammatory effects in the meconium-induced oxidative lung injury.
SDZ-MKS 492 (MKS 492) is a selective type III isozyme inhibitor of cyclic nucleotide phosphodiesterase, effective in allergic bronchoconstriction and platelet activating factor (PAF) or LTB4-induced inflammatory reactions in animals[1].
PF-03049423 is a potent, selective, orally active, and brain penetrant inhibitor of PDE5 with IC50 of 0.2 nM; displays 158-fold and 2460-fold selectivity over PDE6 and PDE11, respectively; possesses an excellent potency and selectivity profile and demonstrates robust in vivo blood pressure lowering in a spontaneously hypertensive rat (SHR) model. Stroke Phase 2 Discontinued
Enoximone is an inotropic vasodilating agent and a selective and orally active phosphodiesterase III (PDE3) inhibitor with an IC50 of 5.9 μM. Enoximone induces vasodilatation and increases intracellular levels of cAMP by inhibiting cGMP-inhibited PDE. Enoximone also exhibits PDE4 inhibitory effect with an IC50 of 21.1 μM for myocardial PDE4A. Enoximone has the potential for congestive heart failure research and has bronchodilatory, antiasthma and anti-inflammatory effects[1][2][3].
GSK256066 is a selective PDE4B(equal affinity to isoforms A-D) inhibitor with IC50 of 3.2 pM, >380,000-fold selectivity versus PDE1/2/3/5/6 and >2500-fold selectivity against PDE4B versus PDE7.IC50 value: 3.2 pM [1]Target: PDE4Bin vitro: GSK256066 is a slow and tight binding inhibitor of PDE4B with apparent IC50 of 3.2 pM. GSK256066 is an extremely potent inhibitor of LPS-stimulated TNFα production in PBMCs with pIC50 of 11.0 and IC50 of 10 pM and human whole-blood cultures with pIC50 of 9.90 and IC50 of 126 pM. GSK256066 is highly selective for PDE4 (>3.8 × 105-fold versus PDE1, PDE2, PDE3, PDE5, and PDE6 and >2.5 × 103-fold against PDE7). GSK256066 inhibits PDE4 isoforms A-D with equal affinity [1].in vivo: GSK256066 inhibits the LPS-induced pulmonary neutrophilia with an ED50 of 1.1 μg/kg, achieving maximal inhibition of 72% at 30 μg/kg when given in the aqueous suspension. GSK256066 inhibits the LPS-induced pulmonary neutrophilia with ED50 of 2.9 μg/kg, achieving maximal inhibition of 62% when given in the dry powder formulation. GSK256066 shows a moderate plasma clearance of 39 ml/min/kg, a moderate volume of distribution of 0.8 L/kg, and a relatively short half-life of 1.1 hour in the male CD rat [1]. GSK256066 sustains at a high lung concentration of 2.6 μg/g after intra-tracheal administration as an aqueous suspension at a dose of 30 μg/kg in rats [2]. GSK256066 (10 μg/kg) is administered intratracheally at different times (2, 6, 12, 18, 24, and 36 hours) before LPS administration, inhibiting LPS-Induced Pulmonary Neutrophilia in rat lipopolysaccharide (LPS)-induced models of acute pulmonary inflammation. GSK256066 (0.3–100 μg/kg) inhibits LPS-induced increases in exhaled nitric oxide with ED50 of 35 μg/kg in rat. GSK256066 (10 μg/kg) is administered half a hour before OVA administration in rat, inhibiting OVA-induced pulmonary eosinophilia with ED50 of 0.4 μg/kg. GSK256066 administered intratracheally as a dry powder blended in respiratory-grade lactose at doses of 3 to 100 μg/kg 2 hours before inhaled LPS challenge in ferrets, inhibiting LPS-induced pulmonary neutrophilia with ED50 of 18 μg/kg without inducing emetic episodes [3].
MBCQ is a potent and selective cGMP-specific phosphodiesterase (PDE V; PDE5) inhibitor with an IC50 of 19 nM. MBCQ lacks inhibitory activity toward other PDE isozymes (all IC50s>100 μM). MBCQ dilates coronary arteries via specific inhibition of cGMP-PDE[1][2][3].
Ensifentrine (RPL-554) is an inhaled first-in-class dual inhibitor of phosphodiesterase 3 (PDE3) and PDE4 with IC50s of 0.4 nM and 1479 nM, respectively. Ensifentrine has bronchoprotective and anti-inflammatory activities. Ensifentrine can be used for chronic obstructive pulmonary disease (COPD) research[1][2].
CD00509 is a Tdp1 inhibitor, with an IC50 value of 0.71 μM. CD00509 can sensitize breast cancer cells to Camptothecin (HY-16560). CD00509 has anti-tumor activity[1].
S32826 is a potent autotaxin inhibitor, with an IC50 of 8.8 nM. S32826 shows similar inhibitory effects at various autotaxin isoforms (α, β and γ). S32826 inhibits LPA release from adipocytes[1].
Deltazinone 1 (Deltazinone1) is a novel highly selective PDEδ inhibitor that inhibits PDEδ/Ras interaction with Kd of 8±4 nM; displays excellent selectivity against a broad panel of pharmacologically relevant proteins; inhibits the PDEδ-Ras interaction in in-cell measurement with Kd of 58±17 nM, exhibits less unspecific cytotoxicity than Deltarasin in a set of human pancreatic cancer cell lines, including KRas mutation and oncogenic KRas-dependence, decreases Ras-mediated signalling in pancreatic cancer cells.