1. Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; 100, Shih-Chuan 1st Rd. Kaohsiung 80708 Taiwan
2. Department of Chemistry; Texas Christian University; 2800 S. University Dr. Fort Worth Texas 76129 USA
3. Department of Fragrance and Cosmetic Science; Kaohsiung Medical University; 100, Shih-Chuan 1st Rd. Kaohsiung 80708 Taiwan
4. Department of Chemistry; National Sun Yat-sen University; 70, Lienhai Rd. Kaohsiung 80424 Taiwan