N. Sata et al., NEW ANTIFUNGAL AND CYTOTOXIC STEROIDAL SAPONINS FROM THE BULBS OF AN ELEPHANT GARLIC MUTANT, Bioscience, biotechnology, and biochemistry, 62(10), 1998, pp. 1904-1911
Saponins in bulbs of a mutant of elephant garlic were investigated, an
d three new steroidal saponins named yay-oisaponins A-C were obtained
together with the known dioscin and aginoside. Their structures, inclu
ding the relative stereochemistry, were elucidated by spectral data in
terpretation, while the absolute stereochemistry of the sugar moieties
was assigned on the basis of a chiral gas chromatographic analysis of
the acid hydrolysates. Yayoisaponins A-C and aginoside exhibited not
only in vitro cytotoxicity against P388 cells at 2.l mu g/ml, but also
antifungal activity against Mortierella ramanniana at 10 mu g/disk.