ChemInform Abstract: Novel Grayanane Diterpenoids from Rhododendron principis. Issue 48 (2nd December 2014) - Liu, Chang‐Chang; Lei, Chun; Zhong, Yang; Gao, Li‐Xin; Li, Jing‐Ya; Yu, Mei‐Hua; Li, Jia; Hou, Ai‐Jun