Brisbagenin and brisbenone, two new spirostanes from Cordyline species

From the leaves of Cordyline cannifolia R.Br., a new steroidal sapogenin diol has been isolated, to which the trivial name brisbagenin has been given. Mass spectral, infra-red and nuclear magnetic resonance data of brisbagenin and its acetylated derivatives showed. the sapogenin to be 1β, 3β-dihydroxy-5α, 25α-spirostane. Jones oxidation of brisbagenin-1-acetate yielded 5α,25α-spirost-1-en-3-one. A compound, identical to this synthetic material was isolated from the leaves of an undescribed Cordyline species, but the product was considered to be an artefact produced during its isolation