title: A new nortriterpenoid saponin from the roots of Symplocos caudata Wall.
abstract: A new nortriterpenoid saponin, 3β,17β-dihydroxy-28-nor-12-oleanen-16-one 3-O-β-d-galactopyranosyl (1 → 2)-{α-l-arabinopyranosyl (1 → 3)-[α-l-arabinofuranosyl (1 → 4)-β-d-glucuronopyranoside]} (1), along with two pairs of known isomers, was isolated from the roots of Symplocos caudata Wall. Their structures were elucidated by spectroscopic and chemical methods.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College (Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education), Beijing, China.
authors.forename: Jian-Shuang
authors.initials: JS
authors.lastname: Jiang
authors.forename: Zhao-Zhen
authors.initials: ZZ
authors.lastname: Liu
authors.forename: Zi-Ming
authors.initials: ZM
authors.lastname: Feng
authors.forename: Ya-Nan
authors.initials: YN
authors.lastname: Yang
authors.forename: Pei-Cheng
authors.initials: PC
authors.lastname: Zhang
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D019684:Magnoliopsida / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C558062:3beta,17beta-dihydroxy-28-nor-12-oleanen-16-one 3-O-beta-D-galactopyranosyl (1-2)-L-arabinopyranosyl (1-3)-(L-arabinofuranosyl (1-4)-beta-D-glucuronopyranoside); D004365:Drugs, Chinese Herbal; D012503:Saponins; D014315:Triterpenes