1. Department of Medicinal Chemistry, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kandasurugadai,
Chiyoda-ku, Tokyo 101-0062, Japan
2. AIDS Research Center, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640,
Japan
3. Laboratory of Molecular
Pharmacology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892-4255, United States
4. Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
5. Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, 1-3-69
Nakamichi, Higashinari-ku, Osaka 537-0025, Japan