Semiquinone radicals generated from catecholamines by ultraviolet irradiation.

Masanori Yoshioka, Yutaka Kirino, Zenzo Tamura, Takao Kwan

Chemical and Pharmaceutical Bulletin · 1977 · 29 citations · 0 references

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Abstract

A detection method of radicals during photolysis of catecholamines and 3, 4-dihydroxyphenyl-L-alanine was established. Electron spin resonance spectra of the radicals derived from catecholamines under the photolytic condition showed hyperfine structures which were assigned to o-semiquinone anion radicals.