19-Oxygenated ent-Kaurane Diterpenoids from Isodon pharicus - Zhao, Yong; Pu, Jian-Xin; Huang, Sheng-Xiong; Ding, Li-Sheng; Li, Li-Mei; Li, Xian; Yang, Li-Bin; Xiao, Wei-Lie; Wu, Ying-Li; Chen, Guo-Qiang; Sun, Han-Dong (Planta Medica, 2012)