1. Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Yang-Ming Chiao-Tung University, Hsinchu 300-10, Taiwan
2. Department of Biological Science & Technology, 1001 Ta-Hseuh Road, National Yang Ming Chiao Tung University, Hsinchu 300-10, Taiwan
3. Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 807-08, Taiwan