1. Bio-Organic
Science Division, Korea Research Institute of Chemical Technology, PO Box 107, Yuseong, Daejeon 305-600, Republic of Korea
2. Korea University of Science and Technology, Daejeon 305-600, Republic of Korea
3. College
of Pharmacy, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon, Gangwon-do 200-701, Republic of Korea
4. College
of Pharmacy, Ajou University, Suwon, Gyeonggi-do 443-749, Republic of Korea