1. Department of Pharmaceutical Chemistry; The Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
2. The State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology; The Fourth Military Medical University; Xi'an; Shaanxi; 710032; China
3. Department of Pharmacy; Xijing Hospital, The Fourth Military Medical University; Xi'an; Shaanxi; 710032; China