Antioxidant activity of red pigments from the lichens Lethariella sernanderi, L. cashmeriana, and L. sinensis.
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.
Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, Japan.
Kaoru
K
Kinoshita
Tadayasu
T
Togawa
Akira
A
Hiraishi
Yuko
Y
Nakajima
Kiyotaka
K
Koyama
Takao
T
Narui
Li-Song
LS
Wang
Kunio
K
Takahashi
D000975:Antioxidants / Q000302:isolation & purification / Q000494:pharmacology*; D008011:Lichens / Q000737:chemistry*; D010860:Pigments, Biological / Q000302:isolation & purification / Q000494:pharmacology*; D010936:Plant Extracts / Q000494:pharmacology; D011809:Quinones / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D013057:Spectrum Analysis
D000975:Antioxidants; D010860:Pigments, Biological; D010936:Plant Extracts; D011809:Quinones; C548221:canarione