The Identification and Synthesis of Further Lichen β-Orcinol para-Depsides

Abstract

The new lichen depsides, methyl 5-chloronorobtusatate (4) and 4-O-demethyldiffractaic acid (5), have been detected in an Erioderma sp. And Xanthoparmelia duplicata Hale respectively, and the structures confirmed by total synthesis. In addition, the lichen depsides, 2'-O- methylatranorin (1), 2-O-methylsquamatic acid (2) and elatinic acid (3), have been prepared by unambiguous synthesis for the first time.

A New 3‐Benzylphthalide from the Moss Erythrodontium julaceum

“…Compound 4 was reported as a hydrolyzed product of baeomycessic acid, [6] indicating that compound 4 was a new natural product which was isolated for the first time from mosses. This compound was used as a starting material to synthesize meta ‐depsides [9–11] . Among 1 – 5 , 1 was a new compound.…”

“…This compound was used as a starting material to synthesize meta-depsides. [9][10][11] Among 1-5, 1 was a new compound.…”