STEROIDAL SAPONINS FROM CHLOROPHYTUM-MALAYENSE

Four new steroidal saponins, chloromalosides A-D, were isolated from the rhizomes of Chlorophytum malayense. On the basis of detailed chemical and spectroscopic evidence, the structures of chloromalosides A-D were elucidated to be neohecogenin 3-O-β-d-glucopyranosyl(1→2)-[β-d-xylopyranosyl(1→3)]-β-d-glucopyranosyl(1→4)-β-d-galactopyranoside, 26-β-d-glucopyranosyl-22-hydroxy-25(S)-5α-furostane-3β,26-diol 3-O-β-d-glucopyranosyl(1→2)-[β-d-xylopyranosyl(1→3)]-β-d-glucopyranosyl(1→4)-β-d-galactopyranoside, neohecogenin 3-O-β-d-xylopyranosyl (1→3)-[α-l-arabinopyranosyl(1→2)]-β-d-glucopyranosyl(1→4)-[α-l-rhamnopyranosyl(1→2)]-β-d-galactopyranoside and neotigogenin 3-O-β-d-xylopyranosyl(1→3)-[α-l-arabinopyranosyl(1→2)]-β-d-glucopyranosyl(1→4)-[α-l-rhamnopyranosyl(1→2)]-β-d-galactopyranoside, respectively. © 1990.