Some phenolic compounds from lichen parmotrema sancti-angelii (Lynge) Hale (parmeliaceae)

Abstract

Four known phenolic compounds 5,​7-​dihydroxy-1(3H)​-​isobenzofuranone (1), methyl lecanorate (2), orcinol (3), and skyrin (4) were isolated from the lichen Parmotrema sancti-angelii (Lynge) Hale. Their chemical structures were established by 1D NMR, high resolution ESI–MS spectroscopic analysis and comparison with those reported in the literatures. This is the first time these compounds are reported in Parmotrema sancti-angelii (Lynge) Hale.