title: Triterpenoidal saponins of Pulsatilla koreana roots.
abstract: Sixteen (1-16) triterpenoidal saponins were isolated from the roots of Pulsatilla koreana, of which four were determined as the previously unknown 23-hydroxy-3β-[(O-α-L-arabinopyranosyl)oxy]lup-20(29)-en-28-oic acid 28-O-β-D-glucopyranosyl ester (1), 23-hydroxy-3β-[(O-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl)oxy]lup-20(29)-en-28-oic acid 28-O-β-D-glucopyranosyl ester (2), 3β-[(O-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl)oxy]lup-20(29)-en-28-oic acid 28-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (3), and 3β-[(O-α-L-rhamnopyranosyl-(1→2)-O-[β-D-glucopyranosyl-(1→4)]-α-L-arabinopyranosyl)oxy]lup-20(29)-en-28-oic acid 28-O-α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (4), respectively, based on spectroscopic analysis. The inhibition of the lipopolysaccharide-induced nitric oxide production of sixteen isolated compounds was evaluated in RAW 264.7 cells at concentrations ranging from 1 μM to 100 μM.
authors.affiliation: College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Daehak-Dong, Gwanak-Gu, Seoul 151-742, Republic of Korea.
authors.forename: Heejung
authors.initials: H
authors.lastname: Yang
authors.forename: Young Woong
authors.initials: YW
authors.lastname: Cho
authors.forename: Seung Hyun
authors.initials: SH
authors.lastname: Kim
authors.forename: Young Choong
authors.initials: YC
authors.lastname: Kim
authors.forename: Sang Hyun
authors.initials: SH
authors.lastname: Sung
mesh_terms: D000818:Animals; D008070:Lipopolysaccharides / Q000494:pharmacology; D008264:Macrophages / Q000187:drug effects; D051379:Mice; D015394:Molecular Structure; D009569:Nitric Oxide / Q000096:biosynthesis; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D031946:Pulsatilla / Q000737:chemistry*; D056910:Republic of Korea; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D008070:Lipopolysaccharides; D012503:Saponins; D014315:Triterpenes; D009569:Nitric Oxide