Abstract
Three new polyhydroxypregnane glycosides named alpinoside A [kidjolanin 3-
O-β-
d-glucopyranosyl-(1→4)-β-
d-glucopyranosyl-(1→4)-β-
d-thevetopyranosyl-(1→4)-β-
d-cymaropyranosyl-(1→4)-β-
d-cymaropyranoside], alpinoside B [kidjolanin 3-
O-β-
d-glucopyranosyl-(1→4)-β-
d-thevetopyranosyl-(1→4)-β-
d-cymaropyranosyl-(1→4)-β-
d-cymaropyranoside], and alpinoside C [kidjolanin 3-
O-β-
d-glucopyranosyl-(1→4)-β-
d-glucopyranosyl-(1→4)-β-
d-oleandropyranosyl-(1→4)-β-
d-cymaropyranosyl-(1→4)-β-
d-cymaropyranoside] were isolated from the leaves of
Oxystelma esculentum var
. alpini. The structure elucidation was accomplished by extensive spectroscopic analysis and acid-catalyzed hydrolysis.
Three new polyhydroxypregnane glycosides named alpinosides A–C were isolated from
Oxystelma esculentum var
. alpini leaves. The structure elucidation was accomplished by extensive spectroscopic analysis and acid-catalyzed hydrolysis.