68027-81-6Relevant articles and documents
Phenyl ethers from cultured lichen mycobionts of Graphis scripta var. serpentina and G. rikuzensis.
Takenaka, Yukiko,Tanahashi, Takao,Nagakura, Naotaka,Hamada, Nobuo
, p. 794 - 797 (2007/10/03)
Spore-derived mycobionts of the lichen Graphis scripta var. serpentina and G. rikuzensis were cultivated on a malt-yeast extract medium supplemented with 10% sucrose and their metabolites were investigated. 3,3'-Dihydroxy-5,5'-dimethyldiphenyl ether was isolated from the cultures of the mycobionts of G. scripta var. serpentina, while a new phenyl ether, rikuzenol, along with two known diphenyl ethers, violaceol-I and violaceol-II, were isolated from those of G. rikuzensis. The structure of the new compound was determined by spectroscopic methods. Violaceol-I was chemically synthesized and interconversion between violaceol-I and violaceol-II was proven.