Apafant

Chemical compound
Apafant
Identifiers
  • 3-(4-(2-chlorophenyl)-9-methyl-6H-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepine-2-yl)-1-(4-morpholinyl)-1-propanone
CAS Number
  • 105219-56-5
PubChem CID
  • 65889
IUPHAR/BPS
  • 1859
ChemSpider
  • 59298
UNII
  • J613NI05SV
KEGG
  • D01652
ChEBI
  • CHEBI:92490
ChEMBL
  • ChEMBL280164
CompTox Dashboard (EPA)
  • DTXSID5048974 Edit this at Wikidata
ECHA InfoCard100.220.442 Edit this at Wikidata
Chemical and physical data
FormulaC22H22ClN5O2S
Molar mass455.96 g·mol−1
3D model (JSmol)
  • Interactive image
  • CC1=NN=C2N1C3=C(C=C(S3)CCC(=O)N4CCOCC4)C(=NC2)C5=CC=CC=C5Cl
InChI
  • InChI=1S/C22H22ClN5O2S/c1-14-25-26-19-13-24-21(16-4-2-3-5-18(16)23)17-12-15(31-22(17)28(14)19)6-7-20(29)27-8-10-30-11-9-27/h2-5,12H,6-11,13H2,1H3
  • Key:JGPJQFOROWSRRS-UHFFFAOYSA-N

Apafant (WEB-2086, LSM-2613) is a drug which acts as a potent and selective inhibitor of the phospholipid mediator platelet-activating factor (PAF). It was developed by structural modification of the thienotriazolodiazepine sedative drug brotizolam and demonstrated that PAF inhibitory actions could be separated from activity at the benzodiazepine receptor. Apafant was investigated for several applications involving inflammatory responses such as asthma and conjunctivitis but was never adopted for medical use, however it continues to be used in pharmacology research.[1][2][3][4]

References

  1. ^ Casals-Stenzel J (December 1991). "Thieno-triazolo-1,4-diazepines as antagonists of platelet-activating factor: present status". Lipids. 26 (12): 1157–1161. doi:10.1007/BF02536522. PMID 1668111. S2CID 4053407.
  2. ^ Brecht HM, Adamus WS, Heuer HO, Birke FW, Kempe ER (January 1991). "Pharmacodynamics, pharmacokinetics and safety profile of the new platelet-activating factor antagonist apafant in man". Arzneimittel-Forschung. 41 (1): 51–59. PMID 1646613.
  3. ^ Ikegami K, Hata H, Fuchigami J, Tanaka K, Kohjimoto Y, Uchida S, Tasaka K (June 1997). "Apafant (a PAF receptor antagonist) suppresses the early and late airway responses in guinea pigs: a comparison with antiasthmatic drugs". European Journal of Pharmacology. 328 (1): 75–81. doi:10.1016/s0014-2999(97)83031-2. PMID 9203572.
  4. ^ Kato M, Imoto K, Miyake H, Oda T, Miyaji S, Nakamura M (August 2004). "Apafant, a potent platelet-activating factor antagonist, blocks eosinophil activation and is effective in the chronic phase of experimental allergic conjunctivitis in guinea pigs". Journal of Pharmacological Sciences. 95 (4): 435–442. doi:10.1254/jphs.fp0040265. PMID 15286429. S2CID 34872524.


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1,4-Benzodiazepines
1,5-Benzodiazepines
2,3-Benzodiazepines*
Triazolobenzodiazepines
Imidazobenzodiazepines
Oxazolobenzodiazepines
Thienodiazepines
Thienotriazolodiazepines
Thienobenzodiazepines*
Pyridodiazepines
Pyridotriazolodiazepines
Pyrazolodiazepines
Pyrrolodiazepines
Tetrahydroisoquinobenzodiazepines
Pyrrolobenzodiazepines*
Benzodiazepine prodrugs
* atypical activity profile (not GABAA receptor ligands)