Phenylalanine derived cyanogenic diglucosides from Eucalyptus camphora and their abundances in relation to ontogeny and tissue type

► Six cyanogenic glucosides occur in Eucalyptus camphora, including four diglucosides. ► Two cyanogenic diglucosides are described, named eucalyptosin B and eucalyptosin C. ► Relative abundance of cyanogenic glucosides varies with both tissue type and ontogeny. ► Polymorphism observed in timing of initiation of prunasin biosynthesis in seedlings.