Motapizone (NAT 05-239) is a selective PDE3 inhibitor. Motapizone moderately inhibits cytokine release in lipopolysaccharide (LPS)-induced alveolar macrophages. Motapizone also inhibits human platelet aggregation by increasing intracellular cAMP[1][2].
Phosphodiesterase-IN-1 (Compound 7) is a phosphodiesterase (PDE) inhibitor with anti-Plasmodium activity. Phosphodiesterase-IN-1 has antiproliferative activity against P. falciparum (strain 3D7) with an IC50 value of 0.64 μM[1].
Theodrenaline is a cardiac stimulant, also acts as an anti-hypotensive agent together with cafedrine.
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].
TPN729MA (TPN729 maleate) is a selective phosphodiesterase type 5 (PDE5) inhibitor with an IC50 value of 2.28 nM. TPN729MA affects erectile function and it can be used for the research of erectile dysfunction[1].
Oglemilast(GRC3886) is a potent PDE4 inhibitor, under clinical studies in the treatment of allergen-induced asthma.IC50 value:Target: PDE4
PDE1-IN-2 is an inhibitor of PDE1 extracted from patent WO2016/55618 A1, example 31; has IC50 values of 6, 140 and 164 nM for PDE1C, PDE1B and PDE1A, respectvely.
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].
PDE10-IN-1 is a potent PDE10-IN-1 inhibitor extracted from Patent WO 2013192273 A1, for treating CNS and metabolic disorders.
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].
Thioquinapiperifil (KF31327 free base), a potent, selective and non-competitive phosphodiesterase-5 (PDE-5, IC50 of 0.074 nM) inhibitor, is used for sexual enhancement study[1][2].
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.
ITI-214 is a picomolar PDE1 inhibitor with excellent selectivity against other PDE family members and against a panel of enzymes, receptors, transporters, and ion channels, exhibits potent PDE1 inhibitory activity (Ki = 58 pM).IC50 value: 58 pM (Ki)Target: PDE1in vitro: ITI-214 exhibits picomolar inhibitory potency for PDE1, demonstrates excellent selectivity against all other PDE families. ITI214 exhibits excellent selectivity over other PDE familymembers. For instance, the Ki values of ITI214 against recombinant full-length human PDE1A, PDE1B, and PDE1C are 33 pM, 380 pM, and 35 pM, respectively. ITI214 is profiled in a panel of enzymes, receptors, transporters, and ion channels from Caliper at 10 μM, which is over 170000 times higher than its Ki for PDE1, and demonstrates good selectivity. [1]in vivo: ITI214 possesses a good overall profile with balanced physicochemical properties, excellent potency and selectivity, and good pharmacokinetics. ITI214 is found to significantly enhance memory performance in the test with a minimum effective dose of 3 mg/kg. [1]
Cilostazol-d4 is deuterium labeled Cilostazol. Cilostazol (OPC 13013) is a potent and selective inhibitor of phosphodiesterase (PDE) 3A, the isoform of PDE 3 in the cardiovascular system, with an IC50 of 0.2 μM[1][2].
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].
K134 is a phosphodiesterase 3 (PDE3) inhibitor. The IC50s of K134 toward PDE3A, PDE3B, PDE5, PDE2 and PDE4 are 0.1, 0.28, 12.1, >300 and >300 µM, respectively.
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:
BRL-50481 is a novel and selective inhibitor of PDE7 with IC50s of 0.15, 12.1, 62 and 490 μM for PDE7A, PDE7B, PDE4 and PDE3, respectively.
PDE12-IN-3 is a phosphodiesterase 12 (PDE12) inhibitor with a pXC50 of 7.68. Antiviral activity[1].
ONO-8430506 is an orally bioavailable and potent autotaxin (ATX)/ENPP2 inhibitor with the IC90 of 100 nM for ATX activity in mouse plasma[1][2][3].
PF-2545920 is a potent and selective PDE10A inhibitor with IC50 of 0.37 nM, with >1000-fold selectivity over the PDE. IC50 value: 0.37 nM [1]Target: PDE10APDE10A subcutaneously administrated at dose of 1 mg/kg elevates striatal cGMP about 3 fold in male CD-1 mice, while PDE10A subcutaneously administrated at dose of 3.2 mg/kg displays a maximal elevation of striatal cGMP approximately a 5-fold increase in male CD-1 mice. PDE10A intravenous injected at a dose of 0.1 mg/kg in Sprague-Dawley rats displays clearance of 36 ml/min/Kg, DE10A intravenous injected at a dose of 0.3 mg/kg in Dog Beagle displays clearance of 7.2 ml/min/Kg in vivo clearance with a moderate volume of distribution, DE10A intravenous injected at a dose of 0.03 mg/kg in Monkey Cynomolgus displays clearance of 13.9 ml/min/Kg in vivo clearance with a moderate volume of distribution. PDE10A is active with an ED50 of 1 mg/kg at a significantly lower total plasma exposure (115 nM) in the conditioned avoidance response assay (CAR) in Sprague-Dawley rats [1]. MP-10 intraperitoneally administrated at dose of 0.3, 3, and 5 mg/kg in male CF-1 mice causes striking increases in GluR1 phosphorylation levels of 3-, 5.4-, and 4.1-fold , respectively. MP-10 at concentration of 1 μM treats Rat striatal slices for 30 min, the level of GluR1S845 phosphorylation at the cell surface is significantly increased 2-fold, without change the level of total GluR1 on the cell surface. MP-10 intraperitoneally administrated at dose of 0.3, 3, and 5 mg/kg in male CF-1 mice results in robust, statistically significant increases in CREBS133 phosphorylation of 3-, 4-, and 2.6-fold, respectively. MP-10 intraperitoneally administrated at dose of 3 mg/kg increases both enkephalin and substance-P mRNA levels in striatum of CF-1 mice. MP-10 intraperitoneally administrated at dose of 0.3-1 mg/kg decreases avoidance responding with a significant treatment effect in the mouse CAR model. Mice treated with MP-10 at dose of 0.03 mg/kg spents more time in the empty than social side in the mice, MP-10 also dose-dependently decreased locomotor activity [2].
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].
Enpp-1-IN-8 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-8 has the potential for the research of cancer and infectious diseases (extracted from patent WO2021203772A1, compound 51)[1].