1. Department of Drug Discovery, Hanmi Research Center, 377-1 Yeongcheon-ri, Dongtan-myeon,
Hwaseong, Gyeonggi-do 445-813, Korea
2. Department of Chemistry, Seoul National University, Seoul 151-747, Korea
3. Department
of Biophysics and Chemical Biology/Bio-MAX Institute, Seoul National University, Seoul 151-747, Korea