1. Department of Clinical Oncology, Institute of Development, Aging and Cancer Tohoku University Sendai Japan
2. Department of Medical Oncology Tohoku University Hospital Sendai Japan
3. Laboratory of Synthetic and Medicinal Chemistry, Faculty of Pharmaceutical Sciences Tohoku Medical and Pharmaceutical University Sendai Japan
4. Faculty of Pharmaceutical Sciences, Research Center for Drug Discovery Tohoku Medical and Pharmaceutical University Sendai Japan