α-Substituted 2-(3-fluoro-4-methylsulfonamidophenyl)acetamides as potent TRPV1 antagonists

  • Phuong Thao Tran
  • , Ho Shin Kim
  • , Jihyae Ann
  • , Sung Eun Kim
  • , Changhoon Kim
  • , Mannkyu Hong
  • , Van Hai Hoang
  • , Van T.H. Ngo
  • , Sunhye Hong
  • , Minghua Cui
  • , Sun Choi
  • , Peter M. Blumberg
  • , Robert Frank-Foltyn
  • , Gregor Bahrenberg
  • , Hannelore Stockhausen
  • , Thomas Christoph
  • , Jeewoo Lee

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A series of α-substituted acetamide derivatives of previously reported 2-(3-fluoro-4-methylsulfonamidophenyl)propanamide leads (1, 2) were investigated for antagonism of hTRPV1 activation by capsaicin. Compound 34, which possesses an α-m-tolyl substituent, showed highly potent and selective antagonism of capsaicin with Ki(CAP) = 0.1 nM. It thus reflected a 3-fold improvement in potency over parent 1. Docking analysis using our homology model indicated that the high potency of 34 might be attributed to a specific hydrophobic interaction of the m-tolyl group with the receptor.

Original languageEnglish
Article number22607
Pages (from-to)2326-2330
Number of pages5
JournalBioorganic and Medicinal Chemistry Letters
Volume25
Issue number11
DOIs
StatePublished - 1 Jun 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.

Keywords

  • Analgesic
  • Capsaicin
  • Molecular modeling
  • TRPV1 antagonist

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