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New Prenylated Bi- and Tricyclic Phloroglucinol Derivatives from Hypericum papuanum

Winkelmann, Karin ; Heilmann, Jörg ; Zerbe, Oliver ; Rali, Topul ; Sticher, Otto


Five new prenylated tricyclic and three new bicyclic acylphloroglucinol derivs. have been isolated by bioactivity-guided fractionation of the petroleum ether ext. of the dried aerial parts of Hypericum papuanum. The tricyclic compds. (1-5) were named papuaforins A-E. The bicyclic compds. were isolated together with their corresponding tautomers and were named hyperguinones A and B (6/6a, 7/7a) ...


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