1. Therapeutics & Biotechnology DivisionKorea Research Institute of Chemical Technology 141 Gajeongro, Yuseong Daejeon 34114 Republic of Korea
2. Department of ChemistryYonsei University Seoul 120-749 Korea
3. Department of Medicinal Chemistry and PharmacologyUniversity of Science and Technology 217 Gajeongro, Yuseong Daejeon 305-355 Republic of Korea
4. Graduate School of New Drug Discovery and DevelopmentChungnam University 99 Daehakro, Yuseong Daejeon 34134 Republic of Korea