1. Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
2. Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
3. Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
4. Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
5. Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan