Xanthanolides from Xanthium: Absolute configuration of xanthanol, isoxanthanol and their C-4 epimers
                                
                                    
                                        作者:J.Alberto Marco、Juan F. Sanz-Cervera、Julia Corral、Miguel Carda、Jasmin Jakupovic                                    
                                    
                                        DOI:10.1016/s0031-9422(00)90847-1
                                    
                                    
                                        日期:1993.12
                                    
                                    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.