1. Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, R.O.C.
2. Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, R.O.C.
3. Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai - 603203, India
4. Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, R.O.C.