1. College of Pharmacy, The Catholic University of Korea, Bucheon, Gyeonggi 420-743, Republic of Korea
2. Department of Chemistry, University of Massachusetts-Amherst, 710 North Pleasant St., Amherst, Massachusetts 01003, United State
3. Department of Bio-Health Technology, Kangwon National University, Chuncheon 200-701, Kangwon, Republic of Korea
4. Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon 200-701, Republic of Korea