Steroidal saponins from the rhizomes of Polygonatum sibiricum.
Four new steroidal saponins, named neosibiricosides A-D (1-4), were isolated from the rhizomes of Polygonatum sibiricum, along with two known spirostanol glycosides. The structures of the new glycosides were elucidated by spectroscopic methods and acid hydrolysis as (23S,24R,25R)-1-O-acetylspirost-5-ene-1beta,3beta,23,24-tetrol 3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl-(1-->4)-beta-D-fucopyranoside (1), (25S)-1-O-acetylspirost-5-ene-1beta,3beta-diol 3-O-beta-D-glucopyranosyl-(1-->2)-[beta-D-xylopyranosyl-(1-->3)]-beta-D-glucopyranosyl-(1-->4)-beta-D-galactopyranoside (2), (25S)-spirost-5-en-3beta-ol 3-O-beta-D-glucopyranosyl-(1-->2)-[beta-D-xylopyranosyl-(1-->3)]-beta-D-glucopyranosyl-(1-->4)-2-O-acetyl-beta-D-galactopyranoside (3), and (25R,S)-spirost-5-en-3beta-ol 3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl-(1-->4)-beta-D-galactopyranoside (4). The cytotoxic activity of the isolated compounds was evaluated with human MCF-7 breast cancer cells.
College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Korea.
Mi-Jeong
MJ
Ahn
Chul Young
CY
Kim
Kee-Dong
KD
Yoon
Min Youl
MY
Ryu
Jong Hye
JH
Cheong
Young-Won
YW
Chin
Jinwoong
J
Kim
D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D005260:Female; D006801:Humans; D007723:Korea; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D031384:Polygonatum / Q000737:chemistry*; D027343:Rhizome / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D014407:Tumor Cells, Cultured
D000972:Antineoplastic Agents, Phytogenic; D012503:Saponins; D013256:Steroids