Synthesis of high specific activity R‐and S‐ warfarin‐3H

C. E. Cook, C. Ray Tallent, Noel H. Ballentine, George F. Taylor, John A. Kepler

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


4‐Hydroxy‐3‐[3‐oxo‐1‐(3‐bromophenyl)butyl]‐2H‐1‐benzopyran‐2‐one (3′ ‐bromowarfarin) was synthesized and resolved into its enantiomers by formation of the d‐10‐camphorsulfonate diastereoisomers, which were separated by liquid chromatography and hydrolyzed. The pure enantiomers were reduced with tritium gas to yield R‐ and S‐4‐hydroxy‐3‐[3‐oxo‐1‐(phenyl‐3‐3H)butyl]‐2H‐l‐ benzopyran‐2‐one (R‐ and S‐warfarin‐3′‐3H) of specific activity 31.2 and 24.9 Ci/mmole, respectively. The compounds have been used to develop a stereoselective radioimmunoassay for warfarin enantiomers.

Original languageEnglish (US)
Pages (from-to)623-631
Number of pages9
JournalJournal of Labelled Compounds and Radiopharmaceuticals
Issue number4
StatePublished - 1979

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Radiology Nuclear Medicine and imaging
  • Drug Discovery
  • Spectroscopy
  • Organic Chemistry


Dive into the research topics of 'Synthesis of high specific activity R‐and S‐ warfarin‐3H'. Together they form a unique fingerprint.

Cite this