Y. Ye et al., ISOLATION OF A FLUORONE PIGMENT FROM THE INDIAN PAINT FUNGUS ECHINODONTIUM-TINCTORIUM AND PYROFOMES-ALBOMARGINATUS, Tetrahedron, 52(16), 1996, pp. 5793-5798
An orange pigment named echinotinctone was isolated from the wood-rott
ing polypores Echinodontium tinctorium and Pyrofomes albomarginatus. I
ts structure was elucidated as 2,6-dihydroxy-1,8-dimethyl-3H-xanthen-3
-one (1) on the basis of spectroscopic and chemical studies. 1 represe
nts the first naturally occurring pigment with a simple fluorone chrom
ophore. (C) 1996 Elsevier Science Ltd.