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Showing drug card for Udenafil (DB06267)

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Version 2.5
Creation Date 2008-03-19 16:20:12
Update Date 2009-04-16 16:48:29
Primary Accession Number DB06267
Secondary Accession Number Not Available
Name Udenafil
Drug Type
  • Approved
  • Investigational
  • Small Molecule
Description Udenafil is a new phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction (ED). It has been approved in South Korea and will be marketed under the brand name Zydena. It is not yet approved for use in the U.S., E.U., or Canada.
Synonyms Not Available
Brand Names
  1. Zydena
Brand Mixtures Not Available
Chemical IUPAC Name 3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[5,4-e]pyrimidin-5-yl)-N-[2-(1-methylpyrrolidin-2-yl)ethyl]-4-propoxybenzenesulfonamide
Chemical Formula C25H36N6O4S
Chemical Structure Structure
CAS Registry Number 268203-93-6
InChI Identifier InChI=1/C25H36N6O4S/c1-5-8-20-22-23(31(4)29-20)25(32)28-24(27-22)19-16-18(10-11-21(19)35-15-6-2)36(33,34)26-13-12-17-9-7-14-30(17)3/h10-11,16-17,26H,5-9,12-15H2,1-4H3,(H,27,28,32)/f/h27H
InChI Key IYFNEFQTYQPVOC-LELJVTLKCD
KEGG Drug Not Available
KEGG Compound Not Available
PubChem Compound 6918523 Link Image
PubChem Substance Not Available
ChEBI ID Not Available
PharmGKB ID Not Available
HET ID Not Available
GenBank ID Not Available
Drug ID Number [DIN] Not Available
RxList Link Not Available
PDRhealth Link Not Available
Wikipedia Link http://en.wikipedia.org/wiki/Udenafil Link Image
FDA Label Not Available
Material Safety Data Sheet (MSDS) Not Available
Synthesis Reference Not Available
Average Molecular Weight 516.6560
Monoisotopic Molecular Weight 516.2519
State Solid
Melting Point Not Available
Experimental Water Solubility Not Available Source: PhysProp
Predicted Water Solubility 7.98e-02 mg/mL Calculated using ALOGPS
Experimental LogP/Hydrophobicity Not Available Source: PhysProp
Predicted LogP 3.20 Calculated using ALOGPS
Experimental LogS Not Available
Predicted LogS -3.81 Calculated using ALOGPS
Experimental Caco2 Permeability Not Available
pKa/Isoelectric Point Not Available
Mass Spectrum Not Available
MOL File Show Link Image | Download Link Image
SDF File Show Link Image | Download Link Image
PDB File Show Link Image | Download Link Image
2D Structure
3D Structure
Experimental PDB ID Not Available
Isomeric SMILES CCCOC1=C(C=C(C=C1)S(=O)(=O)NCC[C@@H]1CCCN1C)C1=NC(=O)C2=C(N1)C(CCC)=NN2C
Canonical SMILES CCCOC1=C(C=C(C=C1)S(=O)(=O)NCCC1CCCN1C)C1=NC(=O)C2=C(N1)C(CCC)=NN2C
Drug Category
  • Phosphodiesterase Inhibitors
  • Vasodilator Agents
ATC Codes Not Available
AHFS Codes Not Available
Indication Investigated for use/treatment in erectile dysfunction and hypertension.
Pharmacology Udenafil is a potent selective phosphodiesterase type 5 (PDE5) inhibitor.
Mechanism of Action Udenafil inhibits the cGMP specific phosphodiesterase type 5 (PDE5) which is responsible for degradation of cGMP in the corpus cavernosum located around the penis. Penile erection during sexual stimulation is caused by increased penile blood flow resulting from the relaxation of penile arteries and corpus cavernosal smooth muscle. This response is mediated by the release of nitric oxide (NO) from nerve terminals and endothelial cells, which stimulates the synthesis of cGMP in smooth muscle cells. Cyclic GMP causes smooth muscle relaxation and increased blood flow into the corpus cavernosum. The inhibition of phosphodiesterase type 5 (PDE5) by udenafil enhances erectile function by increasing the amount of cGMP.
Absorption Not Available
Toxicity Not Available
Protein Binding Not Available
Biotransformation Hepatic. Metabolized by CYP3A4 and CYP3A5.
Half Life Not Available
Dosage Forms
Form Route
Tablet Oral
Patient Information Not Available
Contraindications Not Available
Interactions Not Available
Drug Interactions
Drug Interaction
Isosorbide Dinitrate The vasodilatory effects of Isosobide dinitrate may be increased by Udenafil. Severe hypotension may occur. Concomitant therapy is contraindicated.
Isosorbide Mononitrate The vasodilatory effects of Isosobide mononitrate may be increased by Udenafil. Severe hypotension may occur. Concomitant therapy is contraindicated.
Nitroglycerin The vasodilatory effects of Nitroglycerin may be increased by Udenafil. Severe hypotension may occur. Concomitant therapy is contraindicated.
Food Interactions Not Available
Pathways Not Available
General References
  1. Ji HY, Shim HJ, Yoo M, Park ES, Lee HS: Transport of a new erectogenic udenafil in Caco-2 cells. Arch Pharm Res. 2007 Sep;30(9):1168-73. [PubMed Link Image]
  2. Ku HY, Ahn HJ, Seo KA, Kim H, Oh M, Bae SK, Shin JG, Shon JH, Liu KH: The contributions of cytochromes P450 3A4 and 3A5 to the metabolism of the phosphodiesterase type 5 inhibitors sildenafil, udenafil, and vardenafil. Drug Metab Dispos. 2008 Jun;36(6):986-90. Epub 2008 Feb 28. [PubMed Link Image]
  3. Wikipedia Link Image
Organisms Affected
  • Humans and other mammals
Phase 1 Metabolizing Enzymes
  1. Cytochrome P450 3A5 (CYP3A5)
  2. Cytochrome P450 3A4 (CYP3A4)
Targets
  1. cGMP-specific 3',5'-cyclic phosphodiesterase
Phase 1 Metabolizing Enzyme 1 [top]
Enzyme 1 Name Cytochrome P450 3A5 (CYP3A5)
Enzyme 1 Gene Name CYP3A5
Enzyme 1 SwissProt ID P20815 Link Image
Enzyme 1 SNPs SNPJam Report Link Image
Enzyme 1 Protein Sequence >sp|P20815|CP3A5_HUMAN Cytochrome P450 3A5 
MDLIPNLAVETWLLLAVSLVLLYLYGTRTHGLFKRLGIPGPTPLPLLGNVLSYRQGLWKF
DTECYKKYGKMWGTYEGQLPVLAITDPDVIRTVLVKECYSVFTNRRSLGPVGFMKSAISL
AEDEEWKRIRSLLSPTFTSGKLKEMFPIIAQYGDVLVRNLRREAEKGKPVTLKDIFGAYS
MDVITGTSFGVNIDSLNNPQDPFVESTKKFLKFGFLDPLFLSIILFPFLTPVFEALNVSL
FPKDTINFLSKSVNRMKKSRLNDKQKHRLDFLQLMIDSQNSKETESHKALSDLELAAQSI
IFIFAGYETTSSVLSFTLYELATHPDVQQKLQKEIDAVLPNKAPPTYDAVVQMEYLDMVV
NETLRLFPVAIRLERTCKKDVEINGVFIPKGSMVVIPTYALHHDPKYWTEPEEFRPERFS
KKKDSIDPYIYTPFGTGPRNCIGMRFALMNMKLALIRVLQNFSFKPCKETQIPLKLDTQG
LLQPEKPIVLKVDSRDGTLSGE
Phase 1 Metabolizing Enzyme 2 [top]
Enzyme 2 Name Cytochrome P450 3A4 (CYP3A4)
Enzyme 2 Gene Name CYP3A4
Enzyme 2 SwissProt ID P08684 Link Image
Enzyme 2 SNPs SNPJam Report Link Image
Enzyme 2 Protein Sequence >sp|P08684|CP3A4_HUMAN Cytochrome P450 3A4 (EC 1.14.13.67) 
ALIPDLAMETWLLLAVSLVLLYLYGTHSHGLFKKLGIPGPTPLPFLGNILSYHKGFCMFD
MECHKKYGKVWGFYDGQQPVLAITDPDMIKTVLVKECYSVFTNRRPFGPVGFMKSAISIA
EDEEWKRLRSLLSPTFTSGKLKEMVPIIAQYGDVLVRNLRREAETGKPVTLKDVFGAYSM
DVITSTSFGVNIDSLNNPQDPFVENTKKLLRFDFLDPFFLSITVFPFLIPILEVLNICVF
PREVTNFLRKSVKRMKESRLEDTQKHRVDFLQLMIDSQNSKETESHKALSDLELVAQSII
FIFAGYETTSSVLSFIMYELATHPDVQQKLQEEIDAVLPNKAPPTYDTVLQMEYLDMVVN
ETLRLFPIAMRLERVCKKDVEINGMFIPKGWVVMIPSYALHRDPKYWTEPEKFLPERFSK
KNKDNIDPYIYTPFGSGPRNCIGMRFALMNMKLALIRVLQNFSFKPCKETQIPLKLSLGG
LLQPEKPVVLKVESRDGTVSGA
Drug Target 1 [top]
Target 1 ID 204
Target 1 Name cGMP-specific 3',5'-cyclic phosphodiesterase
Target 1 Synonyms
  1. CGB-PDE
  2. EC 3.1.4.35
  3. cGMP-binding cGMP-specific phosphodiesterase
Target 1 Gene Name PDE5A
Target 1 Protein Sequence >cGMP-specific 3',5'-cyclic phosphodiesterase 
MERAGPSFGQQRQQQQPQQQKQQQRDQDSVEAWLDDHWDFTFSYFVRKATREMVNAWFAE
RVHTIPVCKEGIRGHTESCSCPLQQSPRADNSVPGTPTRKISASEFDRPLRPIVVKDSEG
TVSFLSDSEKKEQMPLTPPRFDHDEGDQCSRLLELVKDISSHLDVTALCHKIFLHIHGLI
SADRYSLFLVCEDSSNDKFLISRLFDVAEGSTLEEVSNNCIRLEWNKGIVGHVAALGEPL
NIKDAYEDPRFNAEVDQITGYKTQSILCMPIKNHREEVVGVAQAINKKSGNGGTFTEKDE
KDFAAYLAFCGIVLHNAQLYETSLLENKRNQVLLDLASLIFEEQQSLEVILKKIAATIIS
FMQVQKCTIFIVDEDCSDSFSSVFHMECEELEKSSDTLTREHDANKINYMYAQYVKNTME
PLNIPDVSKDKRFPWTTENTGNVNQQCIRSLLCTPIKNGKKNKVIGVCQLVNKMEENTGK
VKPFNRNDEQFLEAFVIFCGLGIQNTQMYEAVERAMAKQMVTLEVLSYHASAAEEETREL
QSLAAAVVPSAQTLKITDFSFSDFELSDLETALCTIRMFTDLNLVQNFQMKHEVLCRWIL
SVKKNYRKNVAYHNWRHAFNTAQCMFAALKAGKIQNKLTDLEILALLIAALSHDLDHRGV
NNSYIQRSEHPLAQLYCHSIMEHHHFDQCLMILNSPGNQILSGLSIEEYKTTLKIIKQAI
LATDLALYIKRRGEFFELIRKNQFNLEDPHQKELFLAMLMTACDLSAITKPWPIQQRIAE
LVATEFFDQGDRERKELNIEPTDLMNREKKNKIPSMQVGFIDAICLQLYEALTHVSEDCF
PLLDGCRKNRQKWQALAEQQEKMLINGESGQAKRN
Target 1 Number of Residues 889
Target 1 Molecular Weight 100014
Target 1 Theoretical pI 6.00
Target 1 GO Classification
Function
hydrolase activity
hydrolase activity, acting on ester bonds
phosphoric ester hydrolase activity
phosphoric diester hydrolase activity
cyclic-nucleotide phosphodiesterase activity
3',5'-cyclic-nucleotide phosphodiesterase activity
catalytic activity
Process
cellular process
cell communication
signal transduction
Component
Not Available
Target 1 General Function Involved in catalytic activity
Target 1 Specific Function Plays a role in signal transduction by regulating the intracellular concentration of cyclic nucleotides. This phosphodiesterase catalyzes the specific hydrolysis of cGMP to 5'- GMP
Target 1 Pathways Not Available
Target 1 Reactions
  • guanosine 3',5'-cyclic phosphate + H2O = guanosine 5'-phosphate
Target 1 Pfam Domain Function
Target 1 Signals
  • None
Target 1 Transmembrane Regions
  • None
Target 1 Essentiality Non-Essential
Target 1 GenBank ID Protein 3420185 Link Image
Target 1 UniProtKB/Swiss-Prot ID O76074 Link Image
Target 1 UniProtKB/Swiss-Prot Entry Name PDE5A_HUMAN Link Image
Target 1 PDB ID 1T9R Link Image
Target 1 PDB File Show
Target 1 3D Structure
Target 1 Cellular Location
  • Cytoplasmic
Target 1 Gene Sequence >2628 bp 
ATGGAGCGGGCCGGCCCCAGCTTCGGGCAGCAGCGACAGCAGCAGCAGCCCCAGCAGCAG
AAGCAGCAGCAGAGGGATCAGGACTCGGTCGAAGCATGGCTGGACGATCACTGGGACTTT
ACCTTCTCATACTTTGTTAGAAAAGCCACCAGAGAAATGGTCAATGCATGGTTTGCTGAG
AGAGTTCACACCATCCCTGTGTGCAAGGAAGGTATCAGAGGCCACACCGAATCTTGCTCT
TGTCCCTTGCAGCAGAGTCCTCGTGCAGATAACAGTGTCCCTGGAACACCAACCAGGAAA
ATCTCTGCCTCTGAATTTGACCGGCCTCTTAGACCCATTGTTGTCAAGGATTCTGAGGGA
ACTGTGAGCTTCCTCTCTGACTCAGAAAAGAAGGAACAGATGCCTCTAACCCCTCCAAGG
TTTGATCATGATGAAGGGGACCAGTGCTCAAGACTCTTGGAATTAGTGAAGGATATTTCT
AGTCATTTGGATGTCACAGCCTTATGTCACAAAATTTTCTTGCATATCCATGGACTGATA
TCTGCTGACCGCTATTCCCTGTTCCTTGTCTGTGAAGACAGCTCCAATGACAAGTTTCTT
ATCAGCCGCCTCTTTGATGTTGCTGAAGGTTCAACACTGGAAGAAGTTTCAAATAACTGT
ATCCGCTTAGAATGGAACAAAGGCATTGTGGGACATGTGGCAGCGCTTGGTGAGCCCTTG
AACATCAAAGATGCATATGAGGATCCTCGGTTCAATGCAGAAGTTGACCAAATTACAGGC
TACAAGACACAAAGCATTCTTTGTATGCCAATTAAGAATCATAGGGAAGAGGTTGTTGGT
GTAGCCCAGGCCATCAACAAGAAATCAGGAAACGGTGGGACATTTACTGAAAAAGATGAA
AAGGACTTTGCTGCTTATTTGGCATTTTGTGGTATTGTTCTTCATAATGCTCAGCTCTAT
GAGACTTCACTGCTGGAGAACAAGAGAAATCAGGTGCTGCTTGACCTTGCTAGTTTAATT
TTTGAAGAACAACAATCATTAGAAGTAATTTTGAAGAAAATAGCTGCCACTATTATCTCT
TTCATGCAAGTGCAGAAATGCACCATTTTCATAGTGGATGAAGATTGCTCCGATTCTTTT
TCTAGTGTGTTTCACATGGAGTGTGAGGAATTAGAAAAATCATCTGATACATTAACAAGG
GAACATGATGCAAACAAAATCAATTACATGTATGCTCAGTATGTCAAAAATACTATGGAA
CCACTTAATATCCCAGATGTCAGTAAGGATAAAAGATTTCCCTGGACAACTGAAAATACA
GGAAATGTAAACCAGCAGTGCATTAGAAGTTTGCTTTGTACACCTATAAAAAATGGAAAG
AAGAATAAAGTTATAGGGGTTTGCCAACTTGTTAATAAGATGGAGGAGAATACTGGCAAG
GTTAAGCCTTTCAACCGAAATGACGAACAGTTTCTGGAAGCTTTTGTCATCTTTTGTGGC
TTGGGGATCCAGAACACGCAGATGTATGAAGCAGTGGAGAGAGCCATGGCCAAGCAAATG
GTCACATTGGAGGTTCTGTCGTATCATGCTTCAGCAGCAGAGGAAGAAACAAGAGAGCTA
CAGTCGTTAGCGGCTGCTGTGGTGCCATCTGCCCAGACCCTTAAAATTACTGACTTTAGC
TTCAGTGACTTTGAGCTGTCTGATCTGGAAACAGCACTGTGTACAATTCGGATGTTTACT
GACCTCAACCTTGTGCAGAACTTCCAGATGAAACATGAGGTTCTTTGCAGATGGATTTTA
AGTGTTAAGAAGAATTATCGGAAGAATGTTGCCTATCATAATTGGAGACATGCCTTTAAT
ACAGCTCAGTGCATGTTTGCTGCTCTAAAAGCAGGCAAAATTCAGAACAAGCTGACTGAC
CTGGAGATACTTGCATTGCTGATTGCTGCACTAAGCCACGATTTGGATCACCGTGGTGTG
AATAACTCTTACATACAGCGAAGTGAACATCCACTTGCCCAGCTTTACTGCCATTCAATC
ATGGAACACCATCATTTTGACCAGTGCCTGATGATTCTTAATAGTCCAGGCAATCAGATT
CTCAGTGGCCTCTCCATTGAAGAATATAAGACCACGTTGAAAATAATCAAGCAAGCTATT
TTAGCTACAGACCTAGCACTGTACATTAAGAGGCGAGGAGAATTTTTTGAACTTATAAGA
AAAAATCAATTCAATTTGGAAGATCCTCATCAAAAGGAGTTGTTTTTGGCAATGCTGATG
ACAGCTTGTGATCTTTCTGCAATTACAAAACCCTGGCCTATTCAACAACGGATAGCAGAA
CTTGTAGCAACTGAATTTTTTGATCAAGGAGACAGAGAGAGAAAAGAACTCAACATAGAA
CCCACTGATCTAATGAACAGGGAGAAGAAAAACAAAATCCCAAGTATGCAAGTTGGGTTC
ATAGATGCCATCTGCTTGCAACTGTATGAGGCCCTGACCCACGTGTCAGAGGACTGTTTC
CCTTTGCTAGATGGCTGCAGAAAGAACAGGCAGAAATGGCAGGCCCTTGCAGAACAGCAG
GAGAAGATGCTGATTAATGGGGAAAGCGGCCAGGCCAAGCGGAACTGA
Target 1 GenBank Gene ID
Target 1 GeneCard ID PDE5A Link Image
Target 1 GenAtlas ID PDE5A Link Image
Target 1 HGNC ID HGNC:8784 Link Image
Target 1 Chromosome Location 4
Target 1 Locus 4q25-q27
Target 1 SNPs SNPJam Report Link Image
Target 1 General References
  1. Zhou L, Thompson WJ, Potter DE: Multiple cyclic nucleotide phosphodiesterases in human trabecular meshwork cells. Invest Ophthalmol Vis Sci. 1999 Jul;40(8):1745-52. [PubMed Link Image]
  2. Sung BJ, Hwang KY, Jeon YH, Lee JI, Heo YS, Kim JH, Moon J, Yoon JM, Hyun YL, Kim E, Eum SJ, Park SY, Lee JO, Lee TG, Ro S, Cho JM: Structure of the catalytic domain of human phosphodiesterase 5 with bound drug molecules. Nature. 2003 Sep 4;425(6953):98-102. [PubMed Link Image]
  3. Stacey P, Rulten S, Dapling A, Phillips SC: Molecular cloning and expression of human cGMP-binding cGMP-specific phosphodiesterase (PDE5). Biochem Biophys Res Commun. 1998 Jun 18;247(2):249-54. [PubMed Link Image]
  4. Loughney K, Hill TR, Florio VA, Uher L, Rosman GJ, Wolda SL, Jones BA, Howard ML, McAllister-Lucas LM, Sonnenburg WK, Francis SH, Corbin JD, Beavo JA, Ferguson K: Isolation and characterization of cDNAs encoding PDE5A, a human cGMP-binding, cGMP-specific 3',5'-cyclic nucleotide phosphodiesterase. Gene. 1998 Aug 17;216(1):139-47. [PubMed Link Image]
  5. Yanaka N, Kotera J, Ohtsuka A, Akatsuka H, Imai Y, Michibata H, Fujishige K, Kawai E, Takebayashi S, Okumura K, Omori K: Expression, structure and chromosomal localization of the human cGMP-binding cGMP-specific phosphodiesterase PDE5A gene. Eur J Biochem. 1998 Jul 15;255(2):391-9. [PubMed Link Image]
Target 1 Drug References
  1. Gur S, Sikka SC, Hellstrom WJ: Novel phosphodiesterase-5 (PDE5) inhibitors in the alleviation of erectile dysfunction due to diabetes and ageing-induced oxidative stress. Expert Opin Investig Drugs. 2008 Jun;17(6):855-64. [PubMed Link Image]

This project is supported by Genome Alberta & Genome Canada, a not-for-profit organization that is leading Canada's national genomics strategy with $600 million in funding from the federal government. This project is also supported in part by GenomeQuest, Inc., an enterprise genomic information company serving the life science community.