From Hymenocallis littoralis, one new alkaloid, named littoraline, tog
ether 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 o
f HIV reverse transcriptase, and lycorine and haemanthamine showed pot
ent in vitro cytotoxicity.