Discovery of (E)-5-(benzylideneamino)-1H-benzo[d]imidazol-2(3H)-one derivatives as inhibitors for PTK6

Hyun Jae Shim, Hye Ran Yang, Han Ie Kim, Shin Ae Kang, Kyoung Tai No, Young Hoon Jung, Seung Taek Lee

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12 Citations (Scopus)


A lead compound 1, which inhibits the catalytic activity of PTK6, was selected from a chemical library. Derivatives of compound 1 were synthesized and analyzed for inhibitory activity against PTK6 in vitro and at the cellular level. Selected compounds were analyzed for cytotoxicity in human foreskin fibroblasts using MTT assays and for selectivity towards PTK members in HEK 293 cells. Compounds 20 (in vitro IC50= 0.12 μM) and 21 (in vitro IC50= 0.52 μM) showed little cytotoxicity, excellent inhibition of PTK6 in vitro and at the cellular level, and selectivity for PTK6. Compounds 20 and 21 inhibited phosphorylation of specific PTK6 substrates in HEK293 cells. Thus, we have identified novel PTK6 inhibitors that may be used as treatments for PTK6-positive carcinomas, including breast cancer.

Original languageEnglish
Pages (from-to)4659-4663
Number of pages5
JournalBioorganic and Medicinal Chemistry Letters
Issue number19
Publication statusPublished - 2014 Oct 1

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation Grant funded by the Government of Republic of Korea (MSIP) (No. 2013R1A2A2A01013884 ).

Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.

All Science Journal Classification (ASJC) codes

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


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