131524-45-3Relevant articles and documents
Cyclographin, a New Depsidone from the Lichen Catarraphia dictyoplaca
Elix, John A.,Naidu, Rajina,Thor, Goeran
, p. 635 - 650 (2007/10/02)
The new depsidone cyclographin (1) (methyl 2-chloro-4-formyl-3,7-dihydroxy-1,6,9-trimethyl-11-oxo-11H-dibenzodioxepin-8-carboxylate) has been isolated from the lichen Catarraphia dictyoplaca and the structure established by spectroscopic and degradative methods.
A New Synthesis of Xanthones. 2,4,7-Trichloronorlichexanthone and 4,5,7-Trichloronorlichexanthone, Two New Lichen Xanthones
Elix, John A.,Jiang, Hui,Wardlaw, Judith H.
, p. 1745 - 1758 (2007/10/02)
A new synthetic route to norlichexanthone (1,3,6-trihydroxy-8-methyl-9H-xanthen-9-one) derivatives has been developed by using a Smiles rearrangement of an appropriately substituted depside in the key step. 2,4,7-Trichloronorlichexanthone (22) and 4,5,7-t