1. Life Science R&D Center, SK Chemicals Company Ltd., Seongnam-si, Gyeonggi-do, 463-400, Korea
2. Life
Science Research Center, Daewoong Pharmaceutical Company Ltd., Yongin-si, Gyeonggi-do, 449-814, Korea
3. Laboratory
of Medicinal Chemistry, College of Pharmacy, Seoul National University, Seoul 151-742, Korea
4. Department
of Global Medical Science, Sungshin University, Seoul 142-732, Korea