Xanthanolides from Xanthium: Absolute configuration of xanthanol, isoxanthanol and their C-4 epimers
摘要:
Three new xanthanolides have been isolated from Xanthium spinosum and X. strumarium subsp. italicum, together with other known compounds. The absolute configurations of xanthanol, isoxanthanol and their C-4 epimers have been established.