Fig. 3From: Auto-oxidation of Ent-beyer-15-en-19-al isolated from the essential oil of the heartwood of Erythroxylum monogynum Roxb.: formation of 15,16-epoxy-ent-beyeran-19-oic acid and other productsa Selected HMBCs and b NOEs observed in Selective NOESY gradient experiments of 4Back to article page