1. Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
2. Campus
Chemical Instrument Center, The Ohio State University, Columbus, Ohio 43210, United States
3. Department
of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, United States
4. Edison
Biotechnology Institute, Ohio University, Athens, Ohio 45701, United States
5. Molecular
and Cellular Biology Program, Ohio University, Athens, Ohio 45701, United States
6. Department
of Biomedical Sciences, Ohio University, Athens, Ohio 45701, United States
7. Natural
Products
Discovery Institute, Institute for Hepatitis and Virus Research, Doylestown, Pennsylvania 18902, United States