Synthesis of tripeptides as potent Yersinia protein tyrosine phosphatase inhibitors

Kyeong Lee, Shanthaveerappa K. Boovanahalli, Ky Youb Nam, Sang Uk Kang, Mijeoung Lee, Jason Phan, Li Wu, David S. Waugh, Zhong Yin Zhang, Tai No Kyoung, Jun Lee Jung, Terrence R. Burke

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


We report the synthesis of a series of monoanionic phosphotyrosyl (pTyr) mimetic-containing tripeptides based on 'Fmoc-Glu(OBn)-Xxx-Leu-amide' (where Xxx = pTyr mimetic) and their N-terminally modified derivatives. The inhibitory potencies of compounds were tested against YopH and human PTP1B enzymes. Several compounds exhibited noteworthy activity against both YopH and PTP1B. Among the N-terminally modified analogues, 5-methylindole derivative 30 was found to be the best moiety to replace base-labile Fmoc group. A mode of binding with YopH is proposed for tripeptides 21, 30, and 31.

Original languageEnglish
Pages (from-to)4037-4042
Number of pages6
JournalBioorganic and Medicinal Chemistry Letters
Issue number18
Publication statusPublished - 2005 Sept 15

Bibliographical note

Funding Information:
L.W. and Z.-Y.Z. were supported by National Institute of Health Grant 1U54 AI57158. We thank Dr. Shinya Oishi for help in HPLC purifications.

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmaceutical Science
  • Drug Discovery
  • Clinical Biochemistry
  • Organic Chemistry


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