New guaiane, megastigmane and eudesmane-type sesquiterpenoids and anti-inflammatory constituents fromYoungia japonica - Chen, Wenliang; Liu, Qunfang; Wang, Jian; Zou, Jian; Meng, Dahai; Zuo, Jianping; Zhu, Xingzu; Zhao, Weimin (Planta Medica, 2006)