title: [Studies on chemical constituents of Gynostemma compressum].
abstract: Four new saponins, gycomoside I-IV, were isolated from the aerial part of Gynostemma compressum X.X. Chen et D.R. Liang. The structures were elucidated on the basis of spectral and chemical evidences as 1 beta,3 beta,12 beta,20(S),26-pentahydroxy-dammar- 24(25)-en-20(S)-O-beta-D-glucopyranosyl1-6--beta-D-glucopyranoside (gycomoside I); 1 beta,3 beta,12 beta,20(S)-tetrahydroxy-dammar-24(25)-en-3-O- beta-D-glucopyranosyl-20(S)-O-beta-D-glucopyranosyl1-6--beta-D-glu copyranoside (gycomoside II); 1 beta,3 beta,12 beta,20(S), 26-pentahydroxy-dammar-24(25)-en-20(S)-O- beta-D-glucopyranoside (gycomoside III) and 1 beta,3 beta,12 beta,20(S),26-pentahydroxy-dammar-24(25)- en-3-O-beta-D-glucopyranosyl-20(S)-O-beta-D-glucopyranosyl1-6--bet a-D-glucopyranoside (gycomoside IV).
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing.
authors.forename: S L
authors.initials: SL
authors.lastname: Ding
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Zhu
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D015394:Molecular Structure; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D012503:Saponins