Triterpenes and Triterpenoid Saponins from the Leaves of Ilex kudincha - Zuo, Wen-Jian; Dai, Hao-Fu; Chen, Jing; Chen, Hui-Qin; Zhao, You-Xing; Mei, Wen-Li; Li, Xian; Wang, Jin-Hui (Planta Medica, 2011)