Sodium carbonate, sodium hydroxide, DMSO, acetone, dichloromrthane, methanol, ammonium acetate, copper (II) chloride were purchased from Avantor Performance Materials Poland S.A. (Gliwice, Poland). The Folin-Ciocalteu′s phenol reagent was from Merck (Darmstadt, Germany). Caperatic acid were isolated and identified in Department of Pharmacognosy of Poznan University of Medical Sciences [23 (link)] (Table S1 ), atranorin and methyl β-orcinolcarboxylate (atraric acid) were purchased from ChromaDex (Los Angeles, CA, USA). All other chemicals were from the Sigma–Aldrich Chemical Co. (Taufkirchen, Germany).
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