A convenient preparation of dityrosine via Mn(III)-mediated oxidation of tyrosine

Dong Ik Lee, Sangpill Hwang, Jee Yun Choi, Ik Sung Ahn, Chang Ha Lee

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10 Citations (Scopus)


A simple method to rapidly and conveniently prepare dityrosine from l-tyrosine was developed using Mn(III) as an oxidizing agent. The best yield of the reaction was obtained from the 1 min equimolar reaction of l-tyrosine with Mn(III) acetate in 0.2 M sodium phosphate solution (pH 2.1) at 25 °C. Phosphate was removed by precipitation in ammonia water. The remaining tyrosine was mostly eliminated by precipitation in cold acidic water. Dityrosine was then further purified by HPLC, and its chemical structure was identified by NMR spectroscopy. Even though the yield was only 15.8%, this one-step Mn(III)-mediated oxidation of tyrosine allows dityrosine to be prepared without the need for complicated multi-step organic reactions.

Original languageEnglish
Pages (from-to)999-1003
Number of pages5
JournalProcess Biochemistry
Issue number9
Publication statusPublished - 2008 Sept

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MOST) (No. M10755020001-07N5502-00110).

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biochemistry
  • Applied Microbiology and Biotechnology


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