大叶吊兰中一个新的甾体皂甙(英文)

A New Steroidal Saponin from Chlorophytum malayense

从百合科植物大叶吊兰 (Chlorophytummalayense)根茎中分离得到 1个新的呋甾烷型甾体皂甙 ,命名为大叶吊兰甙E (chloromalosideE)。经波谱和化学方法证明其结构为 :2 6 -O -β -D -glucopyranosyl - 2 2 -hydroxy - 2 5(S) - 5α -furostan - 12 -oxo - 3β ,2 6 -diol 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。同时 ,还得到大叶吊兰甙A ,B和C。

A new steroidal saponin, named chloromaloside E, was isolated from the fresh rhizomes of Chlorophytum malayense , together with three known saponins, chloromaloside A-C. Using the spectral and chemical methods, the structure of chloromaloside E was elucidated as 26-O-β-D-glucopyranosyl-22-hydroxy-25(S)-5α-furostan-12-oxo-3β,26-diol 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.