Doing the methylene shuffle - further insights into the inhibition of mitotic kinesin Eg5 with S-trityl L-cysteine

Murad N. Abualhasan, James A. D. Good, Kitiyaporn Wittayanarakul, Nahoum G. Anthony, Giacomo Berretta, Oliver Rath, Frank Kozielski, Oliver B. Sutcliffe, Simon P. Mackay

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


S-Trityl L-cysteine (STLC) is an inhibitor of the mitotic kinesin Eg5 with potential as an antimitotic chemotherapeutic agent. We previously reported the crystal structure of the ligand protein complex, and now for the first time, have quantified the interactions using a molecular dynamics based approach. Based on these data, we have explored the SAR of the trityl head group using the methylene shuffle strategy to expand the occupation of one of the hydrophobic pockets. The most potent compounds exhibit strong (<100 nM) inhibition of Eg5 in the basal ATPase assay and inhibit growth in a variety of tumour-derived cell lines. (C) 2012 Elsevier Masson SAS. All rights reserved.

Original languageEnglish
Pages (from-to)483-498
Number of pages16
JournalEuropean Journal of Medicinal Chemistry
Publication statusPublished - Aug 2012


  • methylene shuffle
  • insights
  • inhibition
  • mitotic kinesin Eg5 with S-trityl L-cysteine

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