Quinone methide chemistry of prekinamycins: 13C- labeling, spectral global fitting and in vitro studies

Omar Khdour, Edward B. Skibo

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


In this article, we address the presence of the prekinamycin quinone methide using the techniques of spectral global fitting and the 13C-labeling of the reactive centre. Two-electron reduction of a prekinamycin affords a long-lived quinone methide species that was characterised spectrally. A correlation was made between the calculated ΔE (kcal/mol) values for quinone methide tautomerisation and cytostatic activity to support the postulate that the quinone methide plays a role in prekinamycin biological activity. We also prepared a stable quinone methide of prekinamycin and studied its solution chemistry directly.

Original languageEnglish (US)
Pages (from-to)2140-2154
Number of pages15
JournalOrganic and Biomolecular Chemistry
Issue number10
StatePublished - Jun 22 2009

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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