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Chemical structures of the compounds assayed for leishmanicidal activity: anigorufone, 2-hydroxy-9-phenyl-phenalen-1-one (molecular weight = 272.31); REF5, 2-hydroxy-9-(p-methoxyphenyl)- phenalen-1-one (molecular weight = 302.33); REF20, 2-methoxy-9-phenyl-phenalen-1-one (molecular weight = 286.33); EP5, 2,3-epoxy-9-(p-methoxyphenyl)phenalen-1-one (molecular weight = 302.33); and EP6, 2,3-epoxy-9-phenyl-phenalen-1-one (molecular weight = 272.31).
