Three new species in the Australian Graphidaceae with novel chemistries: Phaeographina echinocarpica and Phaeographis necopinata and Phaeographis nornotatica
Phaeographina echinocarpica A.W. Archer & Elix (with echinocarpic acid), Phaeographis necopinata A.W. Archer & Elix (with hypostictic acid) and Phaeographis nornotatica A.W. Archer & Elix (with 4-O-demethylnotatic and hypoprotocetraric acids) are described as new Australian species in the Graphidaceae. A plausible scheme for the biosynthesis of these compounds from common precursors is presented.
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