New Guaiane Sesquiterpenes and Furanocoumarins from Notopterygium incisum - Wu, Shi-Biao; Zhao, Yun; Fan, Hui; Hu, Ying-He; Hamann, Mark T.; Peng, Jiang-Nan; Starks, Courtney M.; O’Neil-Johnson, Mark; Hu, Jin-Feng (Planta Medica, 2008)