Twelve steroidal sapogenins were isolated from sixteen Liliaceae plants : ruscogenin from Albuca nelsonii ; diosgenin and gentrogenin from Aletris foliata ; diosgenin from Aletris formosana ; gitogenin, smilagenin and tigogenin from Allium grayi ; sarsasapogenin from Asparagus cochinchinensis ; diosgenin and heloniogenin from Clintonia udensis ; ruscogenin from Ophiopogon jaburan ; diosgenin and ruscogenin from Ophiopogon planiscapus ; diosgenin from Paris japonica, Polygonatum officinale, Smilacina hondoensis, Tofieldia japonica and Trillium smallii ; hecogenin from Polygonatum falcatum ; rhodeasapogenin and isorhodeasapogenin from Rohdea japonica ; ruscogenin and neoruscogenin from Tofieldia japonica.