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Antioxidant activity of red pigments from the lichens Lethariella sernanderi, L. cashmeriana, and L. sinensis
source:JOURNAL OF NATURAL MEDICINES     author:     2010-03-26

  A yellow and new dark red pigments were isolated from Lethariella sernanderi, L. cashmeriana, and L. sinensis as antioxidant components. The yellow pigment was identified as canarione (1), and the others were determined to be 1,2-quinone derivatives, rubrocashmeriquinone (2) and 7-chlororubrocashmeriquinone (3), and 7-chlorocanarione (4) by analysis of their spectroscopic data.


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