[1] Zhang L L, Xu Y L, Tang Z H, et al. Phytomedicine, 2016, 23(8): 800.

[2] Xu W, Li T, Qiu J F, et al. Anti-Cancer Agents in Medicinal Chemistry, 2015, 15(2): 228.

[3] Ma Q, Han L, Bi X, et al. Phytochemistry, 2016, 131: 150.

[4] Meek D W. Biochemical Journal, 2015, 469(3): 325.

[5] Liao J C C, Lam R, Brazda V, et al. Structure, 2011, 19(3): 418.

[6] Dehkordi M N, Bordbar A K, Lincoln P, et al. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2012, 90: 50.

[8] Shen H Y, Shao X L, Xu H, et al. International Journal of Electrochemical Science, 2011, 6: 532.

[9] Li F, Cao L, Li X, et al. Toxicology Letters, 2015, 232(2): 533.

[10] Ezhuthupurakkal P B, Polaki L R, Suyavaran A, et al. Materials Science and Engineering: C, 2017, 74: 597.

[11] Pakravan P, Masoudian S. Iranian Journal of Pharmaceutical Research: IJPR, 2015, 14(1): 111.

[12] Tarushi A, Polatoglou E, Kljun J, et al. Dalton Transactions, 2011, 40(37): 9461.

[13] Carr M I, Jones S N. Translational Cancer Research, 2016, 5(6): 707.

[15] Xu Fei, Wu Qinan, Chen Jun, et al. Bioorganic & Medicinal Chemistry Letters, 2014, 24(17): 4099.

[19] Xu Fei, Yu Hui, Lu Cai, et al. Evidence-Based Complementary and Alternative Medicine, 2016, 2016: 4753852.