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Discovery and Optimization of Chromeno[2,3-c]pyrrol-9(2H)-ones as Novel Selective and Orally Bioavailable Phosphodiesterase 5 Inhibitors for the Treatment of Pulmonary Arterial Hypertension.

Sun Yat-Sen University
Discovery of Selective Phosphodiesterase 1 Inhibitors with Memory Enhancing Properties.

Dart Neuroscience
Design and Synthesis of Novel and Selective Phosphodiesterase 2 (PDE2a) Inhibitors for the Treatment of Memory Disorders.

Dart Neuroscience
Development of highly potent phosphodiesterase 4 inhibitors with anti-neuroinflammation potential: Design, synthesis, and structure-activity relationship study of catecholamides bearing aromatic rings.

Southern Medical University
Design and synthesis of potent and selective pyridazin-4(1H)-one-based PDE10A inhibitors interacting with Tyr683 in the PDE10A selectivity pocket.

Takeda Pharmaceutical
Discovery and modelling studies of natural ingredients from Gaultheria yunnanensis (FRANCH.) against phosphodiesterase-4.

Sun Yat-Sen University
Discovery of Potent and Selective Inhibitors of Phosphodiesterase 1 for the Treatment of Cognitive Impairment Associated with Neurodegenerative and Neuropsychiatric Diseases.

Intra-Cellular Therapies
Synthesis and evaluation of analogs of the phenylpyridazinone NPD-001 as potent trypanosomal TbrPDEB1 phosphodiesterase inhibitors and in vitro trypanocidals.

Mercachem
Catecholic amides as potential selective phosphodiesterase 4D inhibitors: Design, synthesis, pharmacological evaluation and structure-activity relationships.

Southern Medical University
Pyrido[4,3-e][1,2,4]triazolo[4,3-a]pyrazines as Selective, Brain Penetrant Phosphodiesterase 2 (PDE2) Inhibitors.

Janssen Pharmaceutica
Discovery of novel pyrazolopyrimidinone analogs as potent inhibitors of phosphodiesterase type-5.

Csir-Indian Institute of Integrative Medicine
Synthesis and preliminary biological evaluation of potent and selective 2-(3-alkoxy-1-azetidinyl) quinolines as novel PDE10A inhibitors with improved solubility.

TBA
Discovery of a phosphodiesterase 9A inhibitor as a potential hypoglycemic agent.

Sun Yat-Sen University
Structure-Based Design of a Potent, Selective, and Brain Penetrating PDE2 Inhibitor with Demonstrated Target Engagement.

Janssen Pharmaceutica
Synthesis of quinoline derivatives: discovery of a potent and selective phosphodiesterase 5 inhibitor for the treatment of Alzheimer's disease.

Columbia University
Discovery of a new series of [1,2,4]triazolo[4,3-a]quinoxalines as dual phosphodiesterase 2/phosphodiesterase 10 (PDE2/PDE10) inhibitors.

Janssen-Cilag
Pentasubstituted quercetin analogues as selective inhibitors of particulate 3':5'-cyclic-AMP phosphodiesterase from rat brain.

TBA
Discovery of selective biaryl ethers as PDE10A inhibitors: improvement in potency and mitigation of Pgp-mediated efflux.

Amgen
Structure-based discovery of highly selective phosphodiesterase-9A inhibitors and implications for inhibitor design.

Sun Yat-Sen University
Current landscape of phosphodiesterase 10A (PDE10A) inhibition.

Pfizer
The next generation of phosphodiesterase inhibitors: structural clues to ligand and substrate selectivity of phosphodiesterases.

Monash University (Parkville Campus)
Fused pyrimidine based inhibitors of phosphodiesterase 7 (PDE7): synthesis and initial structure-activity relationships.

Bristol-Myers Squibb Pharmaceutical Research Institute
The discovery of tadalafil: a novel and highly selective PDE5 inhibitor. 1: 5,6,11,11a-tetrahydro-1H-imidazo[1',5':1,6]pyrido[3,4-b]indole-1,3(2H)-dione analogues.

Glaxosmithkline
Novel, potent, and selective phosphodiesterase 5 inhibitors: synthesis and biological activities of a series of 4-aryl-1-isoquinolinone derivatives.

Tanabe Seiyaku
4-(3-Chloro-4-methoxybenzyl)aminophthalazines: synthesis and inhibitory activity toward phosphodiesterase 5.

Eisai
Novel, potent, and selective phosphodiesterase-4 inhibitors as antiasthmatic agents: synthesis and biological activities of a series of 1-pyridylnaphthalene derivatives.

Tanabe Seiyaku
9-Benzyladenines: potent and selective cAMP phosphodiesterase inhibitors.

Upr 421 Du Cnrs
Discovery of potent cyclic GMP phosphodiesterase inhibitors. 2-Pyridyl- and 2-imidazolylquinazolines possessing cyclic GMP phosphodiesterase and thromboxane synthesis inhibitory activities.

Biofor
Cyclic GMP phosphodiesterase inhibitors. 1. The discovery of a novel potent inhibitor, 4-((3,4-(methylenedioxy)benzyl)amino)-6,7,8-trimethoxyquinazoline.

Eisai
Cardiotonic agents. 8. Selective inhibitors of adenosine 3',5'-cyclic phosphate phosphodiesterase III. Elaboration of a five-point model for positive inotropic activity.

Warner-Lambert
A new generation of phosphodiesterase inhibitors: multiple molecular forms of phosphodiesterase and the potential for drug selectivity.

TBA
1,7- and 2,7-naphthyridine derivatives as potent and highly specific PDE5 inhibitors.

Tanabe Seiyaku
Synthesis of 4-(8-benzo[1,2,5]oxadiazol-5-yl-[1,7]naphthyridine-6-yl)-benzoic acid: a potent and selective phosphodiesterase type 4D inhibitor.

Novartis Pharma
Discovery of 4-hydroxy-1,6-naphthyridine-3-carbonitrile derivatives as novel PDE10A inhibitors.

Astrazeneca
Discovery of orally active pyrazoloquinolines as potent PDE10 inhibitors for the management of schizophrenia.

Merck Research Laboratories
Highly potent, selective, and orally active phosphodiesterase 10A inhibitors.

Pfizer
Synthesis and structure-activity relationship studies of dihydronaphthyridinediones as a novel structural class of potent and selective PDE7 inhibitors.

Biocrea
Discovery of imidazo[1,5-a]pyrido[3,2-e]pyrazines as a new class of phosphodiesterase 10A inhibitiors.

Biotie Therapies
Optimization of the aminopyridopyrazinones class of PDE5 inhibitors: discovery of 3-[(trans-4-hydroxycyclohexyl)amino]-7-(6-methoxypyridin-3-yl)-1-(2-propoxyethyl)pyrido[3,4-b]pyrazin-2(1H)-one.

Pfizer
The Gif system as a tool in medicinal chemistry: The oxidation of Sch 57726 under GoAgg
III conditions

TBA
Design, synthesis, and structure-activity relationship, molecular modeling, and NMR studies of a series of phenyl alkyl ketones as highly potent and selective phosphodiesterase-4 inhibitors.

Georgia State University
Cyclic nucleotide phosphodiesterase type 4 inhibitors: evaluation of pyrazolo[1,5-a]-1,3,5-triazine ring system as an adenine bioisostere.

Université
Discovery of novel PDE4 inhibitors targeting the M-pocket from natural mangostanin with improved safety for the treatment of Inflammatory Bowel Diseases.

Guangzhou University of Chinese Medicine
Identification of Novel Quinolin-2(1

Sun Yat-Sen University
Discovery of the Potent and Selective MC4R Antagonist PF-07258669 for the Potential Treatment of Appetite Loss.

Pfizer
Advances in Cyclic Nucleotide Phosphodiesterase-Targeted PET Imaging and Drug Discovery.

Massachusetts General Hospital
The long and winding road of designing phosphodiesterase inhibitors for the treatment of heart failure.

Rural Federal University of Rio De Janeiro
Structural Modifications of Nimodipine Lead to Novel PDE1 Inhibitors with Anti-pulmonary Fibrosis Effects.

Sun Yat-Sen University
Discovery and Structural Optimization of Toddacoumalone Derivatives as Novel PDE4 Inhibitors for the Topical Treatment of Psoriasis.

National-Local Joint Engineering Laboratory of Druggability and New Drugs Evaluation
A new chemical tool for exploring the physiological function of the PDE2 isozyme.

Pfizer
A new chemical tool for exploring the role of the PDE4D isozyme in leukocyte function.

Pfizer
Discovery of novel 2,3-dihydro-1H-inden-1-ones as dual PDE4/AChE inhibitors with more potency against neuroinflammation for the treatment of Alzheimer's disease.

Southern Medical University
Therapeutic potential of phosphodiesterase inhibitors for cognitive amelioration in Alzheimer's disease.

Shaoxing University
Optimization of purine based PDE1/PDE5 inhibitors to a potent and selective PDE5 inhibitor for the treatment of male ED.

Schering-Plough Research Institute
Discovery of Potent Phosphodiesterase-9 Inhibitors for the Treatment of Hepatic Fibrosis.

Sun Yat-Sen University
Identification of purine inhibitors of phosphodiesterase 7 (PDE7).

Bristol-Myers Squibb Pharmaceutical Research Institute
PDE2 inhibition by the PI3 kinase inhibitor LY294002 and analogues.

Monash University
Discovery of novel N-1 substituted pyrazolopyrimidinones as potent, selective PDE2 inhibitors.

Merck
Quinolines as extremely potent and selective PDE5 inhibitors as potential agents for treatment of erectile dysfunction.

Bristol-Myers Squibb Pharmaceutical Research Institute
Mangostanin Derivatives as Novel and Orally Active Phosphodiesterase 4 Inhibitors for the Treatment of Idiopathic Pulmonary Fibrosis with Improved Safety.

Hainan University
Design, synthesis, and biological evaluation of tetrahydroisoquinolines derivatives as novel, selective PDE4 inhibitors for antipsoriasis treatment.

Chinese Academy of Sciences
Discovery of effective phosphodiesterase 2 inhibitors with antioxidant activities for the treatment of Alzheimer's disease.

Sun Yat-Sen University
The discovery of tadalafil: a novel and highly selective PDE5 inhibitor. 2: 2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione analogues.

Glaxosmithkline
Design, synthesis and biological evaluation of novel benzoxaborole derivatives as potent PDE4 inhibitors for topical treatment of atopic dermatitis.

China Pharmaceutical University
From Celecoxib to a Novel Class of Phosphodiesterase 5 Inhibitors: Trisubstituted Pyrazolines as Novel Phosphodiesterase 5 Inhibitors with Extremely High Potency and Phosphodiesterase Isozyme Selectivity.

German University In Cairo
New imidazopyridines with phosphodiesterase 4 and 7 inhibitory activity and their efficacy in animal models of inflammatory and autoimmune diseases.

Palack£
Discovery of Evodiamine Derivatives as Highly Selective PDE5 Inhibitors Targeting a Unique Allosteric Pocket.

Sun Yat-Sen University
Discovery of the Potent and Selective M1 PAM-Agonist N-[(3R,4S)-3-Hydroxytetrahydro-2H-pyran-4-yl]-5-methyl-4-[4-(1,3-thiazol-4-yl)benzyl]pyridine-2-carboxamide (PF-06767832): Evaluation of Efficacy and Cholinergic Side Effects.

Pfizer
Rational Design of 2-Chloroadenine Derivatives as Highly Selective Phosphodiesterase 8A Inhibitors.

Sun Yat-Sen University
[1,2,4]Triazolo[1,5-

Janssen Pharmaceutica N. V.
Novel PDE5 inhibitors derived from rutaecarpine for the treatment of Alzheimer's disease.

Changzhou University
Effective Application of Metabolite Profiling in Drug Design and Discovery.

Pfizer
Discovery of Novel Selective and Orally Bioavailable Phosphodiesterase-1 Inhibitors for the Efficient Treatment of Idiopathic Pulmonary Fibrosis.

Sun Yat-Sen University
Discovery of novel potent imidazo[1,2-b]pyridazine PDE10a inhibitors.

Janssen Research & Development
PDEStrIAn: A Phosphodiesterase Structure and Ligand Interaction Annotated Database As a Tool for Structure-Based Drug Design.

Vrije Universiteit Amsterdam
Discovery and Optimization of α-Mangostin Derivatives as Novel PDE4 Inhibitors for the Treatment of Vascular Dementia.

Guangzhou University of Chinese Medicine
Design and synthesis of 3-aminophthalazine derivatives and structural analogues as PDE5 inhibitors: anti-allodynic effect against neuropathic pain in a mouse model.

University of Strasbourg
Structure-Aided Identification and Optimization of Tetrahydro-isoquinolines as Novel PDE4 Inhibitors Leading to Discovery of an Effective Antipsoriasis Agent.

Shanghai Institute of Materia Medica
Pharmacokinetics-Driven Optimization of 4(3 H)-Pyrimidinones as Phosphodiesterase Type 5 Inhibitors Leading to TPN171, a Clinical Candidate for the Treatment of Pulmonary Arterial Hypertension.

Chinese Academy of Sciences
Discovery of Potent, Selective, and Orally Bioavailable Inhibitors against Phosphodiesterase-9, a Novel Target for the Treatment of Vascular Dementia.

Sun Yat-Sen University
1-Arylnaphthalene lignan: a novel scaffold for type 5 phosphodiesterase inhibitor.

Tanabe Seiyaku
Novel, potent, selective, and brain penetrant phosphodiesterase 10A inhibitors.

Abbvie Deutschland
Design, synthesis of novel purin-6-one derivatives as phosphodiesterase 2 (PDE2) inhibitors: The neuroprotective and anxiolytic-like effects.

Changzhou University
Validation of Phosphodiesterase-10 as a Novel Target for Pulmonary Arterial Hypertension via Highly Selective and Subnanomolar Inhibitors.

Sun Yat-Sen University
Multi-target design strategies for the improved treatment of Alzheimer's disease.

China Pharmaceutical University
Discovery of a pyrazolo[1,5-a]pyrimidine derivative (MT-3014) as a highly selective PDE10A inhibitor via core structure transformation from the stilbene moiety.

Mitsubishi Tanabe Pharma
Structure Overhaul Affords a Potent Purine PI3Kδ Inhibitor with Improved Tolerability.

TBA
Synthesis and evaluation of polycyclic pyrazolo[3,4-d]pyrimidines as PDE1 and PDE5 cGMP phosphodiesterase inhibitors.

Schering-Plough Research Institute
Potent tetracyclic guanine inhibitors of PDE1 and PDE5 cyclic guanosine monophosphate phosphodiesterases with oral antihypertensive activity.

Schering-Plough Research Institute
Discovery of novel inhibitors of phosphodiesterase 4 with 1-phenyl-3,4-dihydroisoquinoline scaffold: Structure-based drug design and fragment identification.

South China Agricultural University
Fragment-assisted hit investigation involving integrated HTS and fragment screening: Application to the identification of phosphodiesterase 10A (PDE10A) inhibitors.

Astrazeneca
Introduction of a conformational switching element on a pyrrolidine ring. Synthesis and evaluation of (R*,R*)-(+/-)-methyl 3-acetyl-4-[3- (cyclopentyloxy)-4-methoxyphenyl]-3-methyl-1-pyrrolidinecarboxylate, a potent and selective inhibitor of cAMP-specific phosphodiesterase.

Glaxo Wellcome Research
Discovery of clinical candidate 1-(4-(3-(4-(1H-benzo[d]imidazole-2-carbonyl)phenoxy)pyrazin-2-yl)piperidin-1-yl)ethanone (AMG 579), a potent, selective, and efficacious inhibitor of phosphodiesterase 10A (PDE10A).

Amgen
Novel class of benzoic acid ester derivatives as potent PDE4 inhibitors for inhaled administration in the treatment of respiratory diseases.

Chiesi Farmaceutici
Inhibition of cyclic nucleotide phosphodiesterase by derivatives of 1,3-bis(cyclopropylmethyl)xanthine.

Smithkline Beecham Pharmaceuticals
Cyclic GMP phosphodiesterase inhibitors. 2. Requirement of 6-substitution of quinazoline derivatives for potent and selective inhibitory activity.

Eisai
Discovery of potent selective bioavailable phosphodiesterase 2 (PDE2) inhibitors active in an osteoarthritis pain model. Part II: optimization studies and demonstration of in vivo efficacy.

Pfizer
Discovery of potent, selective, bioavailable phosphodiesterase 2 (PDE2) inhibitors active in an osteoarthritis pain model, part I: transformation of selective pyrazolodiazepinone phosphodiesterase 4 (PDE4) inhibitors into selective PDE2 inhibitors.

Pfizer
Optical resolution, absolute configuration, and activity of the enantiomers of proxyphylline.

TBA
Cardiotonic agents. 1. 4,5-Dihydro-6-[4-(1H-imidazol-1-yl)phenyl]-3 (2H)-pyridazinones: novel positive inotropic agents for the treatment of congestive heart failure.

TBA
Discovery of furyl/thienyl β-carboline derivatives as potent and selective PDE5 inhibitors with excellent vasorelaxant effect.

Shandong University
Cardiotonic agents. 5. 1,2-Dihydro-5-[4-(1H-imidazol-1-yl)phenyl]-6-methyl-2-oxo-3- pyridinecarbonitriles and related compounds. Synthesis and inotropic activity.

TBA
Indole acids as a novel PDE2 inhibitor chemotype that demonstrate pro-cognitive activity in multiple species.

Merck
Optimization of Chromeno[2,3- c]pyrrol-9(2 H)-ones as Highly Potent, Selective, and Orally Bioavailable PDE5 Inhibitors: Structure-Activity Relationship, X-ray Crystal Structure, and Pharmacodynamic Effect on Pulmonary Arterial Hypertension.

Sun Yat-Sen University
Novel Phosphodiesterase Inhibitors for Cognitive Improvement in Alzheimer's Disease.

Sun Yat-Sen University
Structure-based design and structure-activity relationships of 1,2,3,4-tetrahydroisoquinoline derivatives as potential PDE4 inhibitors.

South China Agricultural University
Discovery of novel purine nucleoside derivatives as phosphodiesterase 2 (PDE2) inhibitors: Structure-based virtual screening, optimization and biological evaluation.

East China University of Science and Technology
The identification of a novel lead class for phosphodiesterase 2 inhibition by fragment-based drug design.

Merck
Cardiotonic agents. 7. Inhibition of separated forms of cyclic nucleotide phosphodiesterase from guinea pig cardiac muscle by 4,5-dihydro-6-[4-(1H-imidazol-1-yl)phenyl]-3(2H)-pyridazinones and related compounds. Structure-activity relationships and correlation with in vivo positive inotropic activi

Warner-Lambert
Prenylated flavonoids as potent phosphodiesterase-4 inhibitors from Morus alba: Isolation, modification, and structure-activity relationship study.

Sun Yat-Sen University
Late-Stage Microsomal Oxidation Reduces Drug-Drug Interaction and Identifies Phosphodiesterase 2A Inhibitor PF-06815189.

Pfizer
Discovery of Potent and Selective Periphery-Restricted Quinazoline Inhibitors of the Cyclic Nucleotide Phosphodiesterase PDE1.

Pfizer
Lead Diversification at the Nanomole Scale Using Liver Microsomes and Quantitative Nuclear Magnetic Resonance Spectroscopy: Application to Phosphodiesterase 2 Inhibitors.

Pfizer
Discovery of Clinical Candidate N-((1S)-1-(3-Fluoro-4-(trifluoromethoxy)phenyl)-2-methoxyethyl)-7-methoxy-2-oxo-2,3-dihydropyrido[2,3-b]pyrazine-4(1H)-carboxamide (TAK-915): A Highly Potent, Selective, and Brain-Penetrating Phosphodiesterase 2A Inhibitor for the Treatment of Cognitive Disorders.

Takeda Pharmaceutical
Discovery of an Orally Bioavailable, Brain-Penetrating, in Vivo Active Phosphodiesterase 2A Inhibitor Lead Series for the Treatment of Cognitive Disorders.

Takeda Pharmaceutical
1,3-Dihydro-2H-imidazo[4,5-b]quinolin-2-ones--inhibitors of blood platelet cAMP phosphodiesterase and induced aggregation.

Bristol-Myers Squibb Pharmaceutical Research Institute
Identification of a Potent, Highly Selective, and Brain Penetrant Phosphodiesterase 2A Inhibitor Clinical Candidate.

Pfizer
Discovery and Optimization of Thiazolidinyl and Pyrrolidinyl Derivatives as Inhaled PDE4 Inhibitors for Respiratory Diseases.

Chiesi Farmaceutici
Inhibitors of blood platelet cAMP phosphodiesterase. 2. Structure-activity relationships associated with 1,3-dihydro-2H-imidazo[4,5-b]quinolin-2-ones substituted with functionalized side chains.

Bristol-Myers Squibb Pharmaceutical Research Institute
Application of Structure-Based Design and Parallel Chemistry to Identify a Potent, Selective, and Brain Penetrant Phosphodiesterase 2A Inhibitor.

Pfizer
Pyridinone MK2 inhibitors and uses thereof

Xinthera
Dioxinoquinoline compounds, preparation method and uses thereof

Beijing Scitech-Mq Pharmaceuticals
Isoquinolin-3-yl carboxamides and preparation and use thereof

Biosplice Therapeutics
Pyridine derivative

Astellas Pharma
Chiral N-acyl-5,6,7(8-substituted)-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazines as selective NK-3 receptor antagonists, pharmaceutical composition, methods for use in NK-3 receptor mediated disorders and chiral synthesis thereof

Ogeda
Pet imaging agents

Novartis
Alkoxy compounds for disease treatment

Acucela
Benzimidazole derivates useful as inhibitors of mammalian histone deacetylase activity

Kancera
Toll-like receptor 7 (TLR7) agonists having a heterobiaryl moiety, conjugates thereof, and methods and uses therefor

Bristol-Myers Squibb
TGFβ receptor antagonist

Bristol-Myers Squibb
Azabenzimidazole derivatives

Boehringer Ingelheim International
Pyrazine derivatives

Hoffmann-La Roche
Methods and compositions for kinase inhibition

University of California
Characterization of Protein Tyrosine Phosphatase 1B Inhibition by Chlorogenic Acid and Cichoric Acid.

Washington College
Compounds and compositions as inhibitors of MEK

Novartis
1,4-benzodiazepine-2,5-diones and related compounds with therapeutic properties

The Regents of The University of Michigan
Compounds for the treatment of neurodegenerative diseases

Proteotech
Quinone reductase 2 is an adventitious target of protein kinase CK2 inhibitors TBBz (TBI) and DMAT.

University of Western Ontario
2,3-Dihydroquinazolin-4(1H)-one derivatives as potential non-peptidyl inhibitors of cathepsins B and H.

Kurukshetra University
Interactions of the novel antipsychotic aripiprazole (OPC-14597) with dopamine and serotonin receptor subtypes.

University of North Carolina
Cloning, expression, and pharmacology of four human 5-hydroxytryptamine 4 receptor isoforms produced by alternative splicing in the carboxyl terminus.

Paris-Sud University
SB-216641 and BRL-15572--compounds to pharmacologically discriminate h5-HT1B and h5-HT1D receptors.

Smithkline Beecham Pharmaceuticals
Targeting a prokaryotic protein in a eukaryotic pathogen: identification of lead compounds against cryptosporidiosis.

Brandeis University
Structure-based discovery and in-parallel optimization of novel competitive inhibitors of thymidylate synthase.

Northwestern University