1. Laboratory of Medicinal Chemistry School of Pharmacy Kitasato University 5-9-1, Shirokane, Minato-ku Tokyo 108-8641 Japan
2. Medicinal Research Laboratories School of Pharmacy Kitasato University 5-9-1, Shirokane, Minato-ku Tokyo 108-8641 Japan
3. Division of Cancer Pathophysiology National Cancer Center Research Institute 5-1-1 Tsukiji, Chuo-ku Tokyo 104-0045 Japan
4. Analytical Unit for Organic Chemistry Kitasato University 5-9-1, Shirokane, Minato-ku Tokyo 108-8641 Japan
5. Division of Supportive Care Research Exploratory Oncology Research & Clinical Trial Center National Cancer Center 5-1-1 Tsukiji, Chuo-ku Tokyo 104-0045 Japan
6. Innovation Center for Supportive, Palliative and Psychosocial Care National Cancer Center Hospital 5-1-1 Tsukiji, Chuo-ku Tokyo 104-0045 Japan
7. Department of Comprehensive Oncology Graduate School of Biomedical Sciences Nagasaki University 1-12-4 Sakamoto Nagasaki 852-8523 Japan