title: New triterpenoid saponins from bulbs of Bolbostemma paniculatum.
abstract: Nine new triterpenoid saponins were isolated from the bulbs of Bolbostemma paniculatum (Maxim.) Franquet (Cucurbitaceae): 7beta,18,20,26-tetrahydroxy-(20S)-dammar-24 E-en-3-O-alpha-L-(3-acetyl)arabinopyranosyl-(1-->2)-beta-D-glucopyranoside, 7beta,18,20,26-tetrahydroxy-(20S)-dammar-24E-en-3-O-alpha-L-(4-acetyl)arabinopyranosyl-(1-->2)-beta-D-glucopyranoside, 7beta,18,20,26-tetrahydroxy-(20S)-dammar-24E-en-3-O-alpha-L-arabinopyranosyl-(1-->2)-beta-D-(6-acetyl)glucopyranoside, 7beta,20,26-trihydroxy-(20S)-dammar-24E-en-3-O-alpha-L-arabinopyranosyl-(1-->2)-beta-D-glucopyranoside, 7beta,20,26-trihydroxy-(20S)-dammar-24E-en-3-O-alpha-L-(3-acetyl)arabinopyranosyl-(1-->2)-beta-D-glucopyranoside, 7beta,20,26-trihydroxy-(20S)-dammar-24E-en-3-O-alpha-L-(4-acetyl)arabinopyranosyl-(1-->2)-beta-D-glucopyranoside, 7beta,20,26-trihydroxy-8-formyl-(20S)-dammar-24E-en-3-O-alpha-L-(3-acetyl)arabinopyranosyl-(1-->2)-beta-D-glucopyranoside, 7beta,20,26-trihydroxy-8-formyl-(20S)-dammar-24E-en-3- O-alpha-L-(4-acetyl)arabinopyranosyl-(1-->2)-beta-D-glucopyranoside and 6'-O-palmitoyltubeimoside I. In addition, four known triterpenoid saponins: tubeimoside I, tubeimoside II, tubeimoside III and tubeimoside IV were isolated. The structures of the above compounds were elucidated based on spectroscopic studies, and the configuration of C-20 of tubeimoside IV was revised as S rather than R as reported in previous literature. The compounds were tested for their antiviral activity
authors.affiliation: College of Pharmacy, Second Military Medical University, Shanghai, PR China.
authors.forename: Wen-Yong
authors.initials: WY
authors.lastname: Liu
authors.forename: Wei-Dong
authors.initials: WD
authors.lastname: Zhang
authors.forename: Hai-Sheng
authors.initials: HS
authors.lastname: Chen
authors.forename: Zheng-Bing
authors.initials: ZB
authors.lastname: Gu
authors.forename: Ting-Zhao
authors.initials: TZ
authors.lastname: Li
authors.forename: Wan-Sheng
authors.initials: WS
authors.lastname: Chen
mesh_terms: D000212:Acyclovir / Q000494:pharmacology; D000818:Animals; D000998:Antiviral Agents / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D002522:Chlorocebus aethiops; D019662:Cucurbitaceae; D018259:Herpesvirus 1, Human / Q000187:drug effects*; D008826:Microbial Sensitivity Tests; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D012503:Saponins / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D014315:Triterpenes / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use; D014709:Vero Cells / Q000187:drug effects
chemical_list: D000998:Antiviral Agents; D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes; D000212:Acyclovir