Affiliation: | a Life Sciences Division, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, South Korea b Computer-Aided Molecular Design and Bioscience Research Co., Ltd., 464-5 Jung-ri, Kusong-myon, Yongin-shi, Kyonggi-do 449-916, South Korea c Department of Chemistry, Yonsei University, Wonju 220-710, South Korea |