title: Anti-inflammatory triterpene saponins of Pithecellobium dulce: characterization of an echinocystic acid bisdesmoside.
abstract: A new bisdesmodic triterpenoid saponin, dulcin was isolated from the seeds of Pithecellobium dulce and was identified as 3-O-[beta-D-glucopyranosyl (1-->2)-alpha-L-arabinopyranosyl]- 28-O-[beta-D-xylopyranosyl (1-->6)-beta-D-glucopyranosyl]-echinocystic acid. The known oleanolic acid saponin PE, oleanolic acid 3-O-beta-D-glucopyranosyl (1-->2)-alpha-L-arabinopyranoside was also obtained. The structural features were elucidated by a combination of spectroscopic methods and some chemical transformations.
authors.affiliation: Indian Institute of Chemical Biology, Jadavpur, Calcutta, India.
authors.forename: N P
authors.initials: NP
authors.lastname: Sahu
authors.forename: S B
authors.initials: SB
authors.lastname: Mahato
mesh_terms: D000893:Anti-Inflammatory Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D002240:Carbohydrate Sequence; D008969:Molecular Sequence Data; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D012639:Seeds / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: D000893:Anti-Inflammatory Agents; D012503:Saponins; D014315:Triterpenes; C091953:dulcin saponin; D009828:Oleanolic Acid