Tynorphin

Tynorphin
Clinical data
ATC code
  • None
Legal status
Legal status
  • In general: non-regulated
Identifiers
  • (2S)-2-[[(2S)-1-[(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-methylbutanoyl]amino]-3-methylbutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]pyrrolidine-2-carbonyl]amino]-3-(1H-indol-3-yl)propanoic acid
CAS Number
PubChem CID
ChemSpider
Chemical and physical data
FormulaC35H46N6O7
Molar mass662.788 g·mol−1
3D model (JSmol)
  • CC(C)[C@@H](C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CC1=CC=C(C=C1)O)C(=O)N2CCC[C@H]2C(=O)N[C@@H](CC3=CNC4=CC=CC=C43)C(=O)O)N

  • O=C(N[C@H](C(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)N[C@H](C(=O)O)Cc3c2ccccc2[nH]c3)Cc4ccc(O)cc4)C(C)C)[C@@H](N)C(C)C
  • InChI=1S/C35H46N6O7/c1-19(2)29(36)32(44)40-30(20(3)4)33(45)38-26(16-21-11-13-23(42)14-12-21)34(46)41-15-7-10-28(41)31(43)39-27(35(47)48)17-22-18-37-25-9-6-5-8-24(22)25/h5-6,8-9,11-14,18-20,26-30,37,42H,7,10,15-17,36H2,1-4H3,(H,38,45)(H,39,43)(H,40,44)(H,47,48)/t26-,27-,28-,29-,30-/m0/s1
  • Key:WLWBANYDSJWZBI-IIZANFQQSA-N

Tynorphin is a synthetic opioid peptide which is a potent and competitive inhibitor of the enkephalinase class of enzymes which break down the endogenous enkephalin peptides. It specifically inactivates dipeptidyl aminopeptidase III (DPP3) with very high efficacy, but also inhibits neutral endopeptidase (NEP), aminopeptidase N (APN), and angiotensin-converting enzyme (ACE) to a lesser extent. It has a pentapeptide structure with the amino acid sequence Val-Val-Tyr-Pro-Trp (VVYPW).

Tynorphin was discovered in an attempt to develop an enkephalinase inhibitor of greater potency than spinorphin.

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