1996 年 44 巻 4 号 p. 810-815
Five new oleanane-type saponins, polygalasaponins XXVIII-XXXII, along with one known saponin, polygalasaponin XXIV, and one known acylated sucrose, tenuifoliside C, were isolated from the root of Polygala japonica. The structuers of these new compounds were elucidated as 3-O-β-D-glucopyranosyl presenegenin 28-O-β-D-xylopyranosyl (1→4)-α-L-rhamnopyranosyl (1→2)-β-D-fucopyranoxyl ester, 3-O-β-D-glucopyranosyl presenegenin 28-O-β-D-galactopyranosyl (1→5)-β-D-apiofuranosyl (1→4)-β-D-xylopyranosyl (1→4)-α-L-rhamno-pyranosyl (1→2)-β-D-fucopyranosyl ester, 3-O-β-D-glucopyranosyl presenegenin 28-O-β-D-galactopyranosyl (1→4)-β-D-xzylopyranosyl (1→4)-α-L-rhamnopyranosyl (1→2)-[4-O-p-methoxycinnamoyl]-[β-D-glucopyranosyl (1→3)]-β-D-fucopyranosyl ester, 3-O-β-D-glucopyranosyl presenegenin 28-O-α-L-arabinopyranosyl (1→3)-β-D-xylopyranosyl (1→4)-[β-D-apiofuranosyl (1→3)]-α-L-rhamnopyranosyl (1→2)-[4-O-3, 4, 5-trimethoxycinnamoyl]-β-D-fucopyranosyl ester, 3-O-β-D-glucopyranosyl presenegenin 28-O-α-L-arabinopyranosyl (1→3)-β-D-xylopyranosyl (1→4)-[β-D-apiofuranosyl (1→3)]-α-L-rhamnopyranosyl (1→2)-[4-O-p-methoxycinnamoyl]-[α-L-rhamnopyranosyl (1→3)]-β-D-fucopyranosyl ester, erspectively, on the basis of spectroscopic and chemical evidence.
