1. Department of Traditional Chinese Medicine and Natural Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310031, People's Republic of China, Zhejiang Hisun Naturelite Pharmaceutical R&D Co., Ltd. 19-G, Huazhe Plaza, Hangzhou 310006, People's Republic of China, and Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette, France