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Three lycopodium alkaloid N-oxides from Huperzia serrata
Planta Medica
|December 6, 2000
Abstract:
Three lycopodium alkaloid N-oxides, huperzine J (1), huperzine K (2) and huperzine L (3) were obtained from Huperzia serrata (Thunb.) Trev. Their structures were elucidated by spectroscopic methods and the relative configurations of 1 and 3 were established via NOESY NMR observations; optical rotation values and CD data are presented.