Ascyrones A-E, type B bicyclic ployprenylated acylphloroglucinol derivatives from Hypericum ascyron
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Five new polycyclic polyprenylated acylphloroglucinols (1-5), ascyrones A-E, and four known compounds (6-9) were isolated from the aerial parts of Hypericum ascyron. All of the isolates containing a bicyclo[3.3.1]nonane-2,4,9-trione core and a benzoyl group, b... ...
