Sublobaric Acid and Oxolobaric Acid, Two New Depsidones from the Lichen Anzia hypoleucoides

Abstract

The depsidones sublobaric acid (8-hydroxy-3-methoxy-11-oxo-1-propanoyl-6-pentyl-11H-dibenzo[b,e][1,4]- dioxepin-7-carboxylic acid) (6) and oxolobaric acid (1-(1′,4′-dioxopentyl)-8-hydroxy-3-methoxy-11-oxo-6-pentyl-11H-dibenzo[b,e][1,4]dioxepin-7-carboxylic acid) (7) have been isolated from the lichenAnzia hypoleucoides together with atranorin, chloroatranorin, divaricatic acid and lobaric acid (1). The structure of compounds (6) and (7) followed from a combination of spectroscopic data.