Isolement et identification de l'acide furfurique, nouvelle depsidone du lichen Pseudevernia furfuracea (L.) Ach

Abstract
Isolation and Identification of Furfuric Acid a New Depsidone from the Lichen Pseudevernia furfuracea (L.) Ach.The structure of furfuric acid, (1), a new depsidone, isolated from the lichen Pseudevernia furfuracea (L.) Ach. has been established as 4‐formyl‐3,8‐dihydroxy‐9‐(2,4‐dihydroxy‐5‐methoxycarbonyl‐3,6‐dimethylbenzyl)‐1,6‐dimethyl‐11‐oxo‐11H‐dibenzo[b,e][1,4]dioxepin‐7‐carboxylic acid by spectral and chemical methods.