1. Key Lab of Systematic Mycology and Lichenology, Institute of Microbiology, Chinese Academy of Sciences, 13 Beiertiao, Zhongguancun, Beijing 100080, PR China
2. Center for Drug Evaluation, SFDA, 1 Fuxing Road, Beijing 100038, PR China
3. Department of Natural Product Chemistry, Tohoku Pharmaceutical University 4-4-1 Komatsushima, Aoba-ku, Sendai 981-8558, Japan
4. Institute of Molecular and Cellular Biosciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-32, Japan