サルトリイバラのサポニンについて

抄録

1) The rhizomes of Smilax China L., collected during November to December in Tokushima Prefecture, were found to contain diosgenin as the major sapogenin in the form of its glycosides. 2) Three glycosides, named smilax saponin A, B, and C, were detected and B was isolated in a pure state as colorless needles, m.p. 183∼186°(decomp.), [α]_D -90°. 3) Smilax saponin B, consisting of diosgenin and three moles each of D-glucose and L-rhamnose, was hydrolysed with Takadiastase B to yield dioscin, indicating that it corresponds to a parent saponin of dioscin (diosgenin+glucose+2rhamnose). The minor saponins, A and C, were assumed also to be the parent saponins of dioscin having, respectively, four and two additional moles of monosaccharide.