1. Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, People’s Republic of China
2. Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
3. Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, United States
4. Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
5. Purdue Institute for Drug Discovery, Purdue University, West Lafayette, Indiana 47907, United States