Abstract: A new C-nor-D-homosteroid alkaloid of 22,27-imino-17, 23-oxidojervane skeleton was isolated from the bulb of Fritillaria hupehensis Hsiao et K. C. Hsia by column chromatographic techniques, C₂₇H₄₁NO₃, mp257～259℃, named hupehenisine.On the basis of study of the UV. IR. ¹H-NMR and EI-mass spectra of hupehenisine and its diacetyl derivative, the structure of hupehenisine has been established as 22,27-imino-17,23-ozido-5α, 6-dihydrojerv-12-en-11-oxo-3β-ol (Ⅶ).