In addition to the new compound 1, five other known
compounds were isolated and identified as lycocernuine (2) and
cernuine N-oxide (3) (Morita et al., 2004); huperzinine (4) and Ndemethylhuperzinine
(5) (Shen and Chen, 1994); b-obcurine (6)
(Nakashima et al., 1975) by comparison of their physical and
spectroscopic data with those reported in the literatures.