1. P. Siengalewicz, J. Mulzer, U. Rinner, Alkaloids 72, 1-151 (2013) 2. J.S. Liu, Y.L. Zhu, C.M. Yu, Y.Z. Zhou, Y.Y. Han, F.W. Wu, B.F. Qi, Can. J. Chem. 64, 837-839 (1986) 3. Y. Hirasawa, T. Tanaka, K. Koyama, H. Morita, Tetrahedron Lett. 50, 4816-4819 (2009) 4. Y. Hirasawa, J.I. Kobayashi, H. Morita, Heterocycles 77, 679-729 (2009) 5. X. Ma, R. Gang, David. Nat. Prod. Rep. 21, 752-772 (2004) 6. M. Kitajima, H. Takayama, Top. Curr. Chem. 309, 1-32 (2012) 7. W.A. Ayer, Nat. Prod. Rep. 8, 455-463 (1991) 8. Y. Tang, Y. Fu, J. Xiong, M. Li, G.L. Ma, G.X. Yang, B.G. Wei, Y. Zhao, H.Y. Zhang, J.F. Hu, J. Nat. Prod. 76, 1475-1484 (2013) 9. J.S. Liu, C.M. Yu, Y.Z. Zhou, Y.Y. Han, B.F. Qi, Y.L. Zhu, Acta Chem. Sin. 44, 1035-1040 (1986) 10. S. Shu, X. Zhao, W. Wang, G. Zhang, A. Cosoveanu, Y. Ahn, M. Wang, World J. Microbiol. Biotechnol. 30, 3101-3109 (2014) 11. H.B. Wang, C.H. Tan, J.J. Tan, S.J. Qu, Y.L. Chen, Y.M. Li, S.H. Jiang, D.Y. Zhu, Nat. Prod. Res. 23, 1363-1366 (2009) 12. C.H. Tan, B.D. Wang, S.H. Jiang, D.Y. Zhu, Planta Med. 68, 188-190 (2002) 13. C.H. Tan, S.H. Jiang, D.Y. Zhu, P. Huperzine, Tetrahedron Lett. 41, 5733-5736 (2000) 14. W.W. Jiang, F. Liu, X. Gao, J. He, X. Cheng, L.Y. Peng, X.D. Wu, Q.S. Zhao, Fitoterapia 99, 72-77 (2014) 15. Y.M. Ying, X.S. Liu, C.P. Tong, J.W. Wang, Z.J. Zhan, W.G. Shan, Helv. Chim. Acta 97, 1433-1439 (2014) 16. W.A. Ayer, L.M. Browne, H. Orszanska, Z. Valenta, J. Liu, Can. J. Chem. 67, 1538-1540 (1989) 17. F. Liu, X.D. Wu, J. He, X. Deng, L.Y. Peng, H.R. Luo, Q.S. Zhao, Tetrahedron Lett. 54, 4555-4557 (2013) 18. S.Q. Yuan, T.T. Wei, Yaoxue Xuebao 23, 516-520 (1988) 19. F.A.L. Anet, C.R. Eves, Can. J. Chem. 36, 902-909 (1958) 20. W.A. Ayer, G.G. Iverach, Can. J. Chem. 38, 1823-1826 (1960) 21. T.T.S. Nakashima, P. Peter, L.M. Browne, W.A. Ayer, Can. J. Chem. 53, 1936-1942 (1975) 22. C.Y. Choo, Y. Hirasawa, C. Karimata, K. Koyama, M. Sekiguchi, J.I. Kobayashi, H. Morita, Bioorg. Med. Chem. 15, 1703-1707 (2007) 23. W.A. Ayer, G.C. Kasitu, Can. J. Chem. 67, 1077-1086 (1989) 24. Y.C. Shen, C.H. Chen, J. Nat. Prod. 57, 824-826 (1994) 25. D.B. Zhang, J.J. Chen, Q.Y. Song, L. Zhang, K. Gao, Molecules 19, 9999-10010 (2014) 26. Y. Niu, H. Gao, F. Xu, C. Wang, P. Liu, G. Yang, Q. Sun, P. Xu, Chem. Biol. Drug Des. 80, 775-780 (2012) 27. S.N. Alam, K.A.H. Adams, D.B. MacLean, Can. J. Chem. 42, 2456-2466 (1964) 28. P.C. May, R.A. Dean, S.L. Lowe, F. Martenyi, S.M. Sheehan, L.N. Boggs, S.A. Monk, B.M. Mathes, D.J. Mergott, B.M. Watson, S.L. Stout, D.E. Timm, E. Smith Labell, C.R. Gonzales, M. Nakano, S.S. Jhee, M. Yen, L. Ereshefsky, T.D. Lindstrom, D.O. Calligaro, P.J. Cocke, D. Greg Hall, S. Friedrich, M. Citron, J.E. Audia, J. Neurosci. 31, 16507-16516 (2011) |