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Culberson, CF/ Culberson, WL 1978: B-Orcinol derivatives in lichens: biogenetic evidence from Oropogon loxensis. - Experimental Mycology 2: 245-257. [RLL List # 102-15 / Rec.# 3745]
Abstract: 4 tables. 3 figures. [Specimens studied from Costa Rica, Guatemala, and Peru. Three new depsides, 2'-O-methylatranorin, methyl 3-a-hydroxy-4-O-demethylbarbatate and methyl 4-O-demethylbarbatate, were discovered. The dibenzofuran pannaric acid was detected for the first time in the genus. Results of the study " a biogenetic hypothesis involving C-methylation and/or C-formyulation at the polyketide stage and a metabolic grid of redox reactions of aromatic precursors leading to the para-depsides, depsidones, benzyl esters, and meta-depsides typical of lichens".]

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