TPN729 is a novel potent, selective phosphodiesterase type 5 (PDE5) inhibitor with IC50 of 2.28 nM, shows better selectivity profile 2.5 times higher than sildenafil against PDE6 and 500 times higher than tadalafil against PDE11; selectively inhibits PDE5 and blocks the degradation of cyclic guanosine monophosphate, and is a promising PDE5 inhibitor providing fewer side effects and better compliance.
D159687 is a selective PDE4D inhibitor[1].
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]
Tibenelast sodium is a phosphodiesterase inhibitor.
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].
Pde7-in-3 (example 2) is an inhibitor of the phosphodiesterase PDE7 with potential analgesic activity. PDE7-IN-3 can be used to study inflammatory, neuropathic, visceral and nociceptive pain[1].
Deltasonamide 2 is a PDEδ inhibitor with a Kd of ~385 pM[1].
(R)-Avanafil ((R)-TA1790) is a selective PDE5 inhibitor (IC50: 5.2 nM). (R)-Avanafil can be used for research of erectile dysfunction[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].
Enpp-1-IN-19 (compound 29f) is an orally active ENPP1 inhibitor that inhibits cGAMP hydrolysis by ENPP1 (IC50=68 nM). Enpp-1-IN-19 increases anti-PD-L1 responses and inhibits tumor growth in CT26 syngeneic models. Enpp-1-IN-19 also enhances STING-mediated type I interferon responses, induces immune memory, and prevents tumor recurrence[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].
Enpp-1-IN-17 (example 274) is a potent ENPP1 inhibitor, with the inhibition constants (Ki values) toward cGAMP and ATP hydrolysis of 100 nM-1 μM and > 1 μM, respectively. The selectivity ratio for inhibition of cGAMP hydrolysis versus ATP hydrolysis is >6.4[1].
Trequinsin hydrochloride (HL 725) is an extremely potent inhibitor of platelet CAMP phosphodiesterase (PDE), with an IC50 of 0.25 nM. Trequinsin hydrochloride (HL 725) is an extremely potent inhibitor of the aggregation of human platelets induced in vitro by ADP, collagen, thrombin and epinephrine[1][2][3].
Deltarasin is an inhibitor of KRAS-PDEδ interaction with Kd of 38 nM for binding to purified PDEδ.
Etazolate hydrochloride (SQ 20009) is an orally active, selective inhibitor of type 4 phosphodiesterase (PDE4) with an IC50 of 2 μM. Etazolate hydrochloride is a γ-aminobutyric acid A (GABAA) receptor regulator. Etazolate hydrochloride is an α-secretase activator and induced the production of soluble amyloid precursor protein (sAPPα). Etazolate hydrochloride, a pyrazolopyridine class derivative, increases cAMP levels. Etazolate hydrochloride has anxiolyticlike, antidepressant-like and anti-inflammatory effects[1][2][3][4][5].
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:
L-869298 is a potent and selective inhibitor of PDE4.
Anagrelide, an inhibitor of phosphodiesterase type III (PDEIII) (IC50=36 nM), inhibits platelet production. Anagrelide, an imidazoquinazoline derivative, acts as an inhibitor of platelet aggregation. Anagrelide plays in the antithrombopoietic action. The platelet-lowering agent[1].
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.
Tovinontrine (IMR-687) is a highly potent and selective phosphodiesterase-9 (PDE9) inhibitor specifically for the treatment of sickle cell disease. IC50s are 8.19 nM and 9.99 nM for PDE9A1 and PDE9A2, respectively[1].
BAY 73-6691 is a potent, selective brain penetrant PDE9A inhibitor.
NPD-001 is a potent Trypanosoma brucei phosphodiesterases TbrPDEB1 and TbrPDEB2 inhibitor, with IC50 values of 4 and 3 nM, respectively. NPD-001 also inhibits human PDEs (phosphodiesterases). NPD-001 shows good anti trypanosomal activity, with an IC50 of 80 nM[1].
Roflupram is a selective, orally active and brain-penetrant PDE4 inhibitor, with an IC50 of 26.2 nM for core catalytic domains of human PDE4. Roflupram can reverse cognitive deficits and reduce the production of pro-inflammatory factors[1][2].
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].