1. Center
for Marine Natural Products and Drug Discovery, School of Earth and
Environmental Sciences, Seoul National University, NS-80, Seoul 151-747, Korea
2. National
Research Laboratory for Cell Physiology and Department of Physiology, Seoul National University College of Medicine, 28 Yonkeun-Dong, Chongno-Ku, Seoul 110-799, Korea
3. College
of Pharmacy, Yeungnam University, 214-1 Dae-dong, Gyeongsan 712-749, Korea
4. Department
of Chemistry and Nano Science, Global Top 5 Program, Ewha Womans University, Seoul 120-750, Korea
5. Research
Institute of Oceanography, Seoul National University, NS-80, Seoul 151-747, Korea