Three new spirostanol saponins and two new furostanol saponins 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-α-L-rhamnopyranosyl-(1 → 2)-O-[β-D-xylopyranosyl-(1 → 3)]-β-D-xylopyranose with the formation of an O-glycosidic linkage to C- 1 of the aglycone.
steroidal saponins, leaves, furostanol saponins, spirostanol saponins, Agavaceae, Cordyline stricta
NCBI PubMed ID: 9429320Publication DOI: 10.1016/S0031-9422(97)00545-1Journal NLM ID: 0151434Publisher: Elsevier
Institutions: School of Pharmacy, Tokyo University of Pharmacy and Life Science, Hachioji, Tokyo, Japan
Methods: 13C NMR, 1H NMR, IR, FAB-MS, enzymatic hydrolysis, acid hydrolysis, extraction, optical rotation measurement, CC, HMBC, HMQC, COSY, HOHAHA
Found