Crabbogenin, 1β-hydroxycrabbogenin, strictagenin and pompeygenin, four new steroidal sapogenins from cordyline stricta leaves
作者:G. Blunden、J.A. Jaffer、K. Jewers、W.J. Griffin
DOI:10.1016/s0040-4020(01)92364-6
日期:1981.1
From the leaves of Cordyline stricia Endl. four new steroidalsapogenins crabbogenin 5α-spirost-25(27)-en-3α-ol}, 1β-hydroxycrabbogenin, strictagenin (20S, 22S, 25S)-5α-furostan-22, 25-epoxy-1β, 3α, 26-triol} and pompeygenin (25S)-5α-spirostane-1β, 3α-25-triol} have been isolated and their structures determined by chemical and spectroscopic methods.
Three new spirostanol saponins and twonewfurostanolsaponins were isolated from the fresh leaves of Cordyline stricta. Their structures were elucidated on the basis of spectroscopic analysis, including various 2D NMR techniques, hydrolysis, and by comparison of spectral data of known compounds. Two of the isolated saponins contained a new branched triglycoside moiety assigned as O-alpha-L-rhamno