Three New Depsidones From the Lichen Neofuscelia subincerta

Abstract

The depsidones , glomelliferonic acid (4)(8-hydroxy-3-methoxy-ll-oxo-l-(2-oxopentyl)-6- pentyl -11H-dibenzo[ b,e ] [1,4]dioxepin-7-carboxylic acid), loxodellonic acid (5) (8-hydroxy-3-methoxy-11-oxo-1-(2-oxopenty1)-6-propyl-llH-dibenzo[ b,e ][l,4]dioxepin-7-carboxylic acid) and glomellonic acid (6) (8-hydroxy-3-methoxy-1l-oxo-l,6-di(2-oxopentyl)-11H- dibenzo [ b,e ][l,4]dioxepin-7-carboxylic acid), have been isolated from the lichen Neofuscelia subincerta ( Essl .) Essl . and characterized.

Oliveridepsidones A–D, antioxidant depsidones from Garcinia oliveri

“…The depsidones obtained from the Garcinia genus possess 1,3,7,8‐ or 1,3,6,7‐tetraoxygenation patterns with prenyl or modified prenyl side chains. This is different from the depsidones previously obtained from lichens and fungi . The depsidones from lichens and fungi usually have 3,8‐dioxygenation with a methyl or alkyl group at C‐1, C‐9 and/or C‐6.…”