Extraction and Purification of Alantolactone and Isoalantolcatone from Root of Inula helenium
ZHANG Le,WANG Meng-yue, LI Xiao-bo*
NATURAL PRODUCT RESEARCH AND DEVELOPMENT . 2015, (1): 126 -133 .  DOI: 10.16333/j.1001-6880.2015.01.026