From Hymenocallis littoralis, one new alkaloid, named littoraline, together with 13 known lycorine
alkaloids and one lignan, were isolated. The structure and NMR assignments of this new alkaloid were determined by
1D and 2D NMR techniques. Littoraline showed inhibitory activity of HIV reverse transcriptase, and lycorine and
haemanthamine showed potent in vitro cytotoxicity