Chiral effect of a Phe residue in position 3 of the Dmt1-l (or d)-Tic2 analogues on opioid functional activities

Yeon Sun Lee, Hongchang Qu, Peg Davis, Shou Wu Ma, Ruben Vardanyan, Josephine Lai, Frank Porreca, Victor J. Hruby

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


In this letter, we describe a structure-activity relationships study, specifically related to the chirality of third amino acid residue in our H-Dmt-l(or d)-Tic analogues, of which C-terminus is attached to a piperidinyl moiety. Observed selectivities and functional activities of these analogues demonstrated that the chiralities of the second and third position residues are crucial for determining whether these ligands act as antagonists or agonists at the δ opioid receptor, but not at the μ opioid receptor.

Original languageEnglish (US)
Pages (from-to)656-659
Number of pages4
JournalACS Medicinal Chemistry Letters
Issue number7
StatePublished - Jul 11 2013


  • Dmt-Tic
  • chirality
  • opioid functional activities
  • structure-activity relationship
  • δ opioid receptor

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry


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