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Journal of Radioanalytical and Nuclear Chemistry

, Volume 279, Issue 2, pp 675–678 | Cite as

Synthesis of L-tryptophan labeled with hydrogen isotopes in the indole ring

  • E. Winnicka
  • M. Kańska
Short Communication

Abstract

The isotopomers of L-tryptophan (L-Trp) labeled with hydrogen isotopes in the indole ring were obtained by isotope exchange method. Heavy and tritiated water were used as the sources of stable and radioactive label. Three isotopomers, i.e., [4′-2H]-L-Trp, [4′-3H]-L-Trp, and doubly labeled [4′-2H/3H]-L-Trp were synthesized by isotope exchange enhanced by irradiation with a mercury discharge lamp. The indole whole ring labeled isotopomers, i.e., [2′,4′,5′,6′,7′-2H5]-L-, [2′,4′,5′,6′,7′-3H5]-L-, and doubly labeled [2′,4′,5′,6′,7′-2H/3H]-L-Trp were synthesized by isotope exchange between L-Trp and D2O or DTO in the presence of deuteriated trifluoroacetic acid.

Keywords

Deuterium Tritium Isotope Exchange Hydrogen Isotope Total Radioactivity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  1. 1.Department of ChemistryWarsaw UniversityWarsawPoland

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