title: Two new cardenolides from the roots of Streptocaulon griffithii.
abstract: Two new cardenolides, 3beta,5beta,14beta-trihydroxyl-card-16,20(22)-dienolide (1) and 3-O-beta-D-glucopyranosyl-5beta,14beta-dihydroxyl-card-16,20(22)-dienolide (2), together with seven known compounds identified as digitogenin (3), 16-O-acetylgitoxigenin (4), periplogenin (5), 16-O-acetylperiplogenin (6), periplogenin digitoxoside (7), periplogenin-3-O-beta-D-glucopyranoside (8) and periplogenin-3-O-beta-D-glucopyranosyl-(1-->4)-O-beta-D-digitoxopyranoside (9) were isolated from the roots of Streptocaulon griffithii. Their structures were elucidated on the basis of spectroscopic data.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100094, China.
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: L-Z
authors.initials: LZ
authors.lastname: Xu
authors.forename: S-L
authors.initials: SL
authors.lastname: Yang
mesh_terms: D029062:Apocynaceae / Q000737:chemistry*; D002298:Cardenolides / Q000737:chemistry* / Q000302:isolation & purification; D002681:China; D002845:Chromatography; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D013053:Spectrophotometry
chemical_list: C518097:3,5,14-trihydroxycard-16,20(22)-dienolide; C518098:3-O-glucopyranosyl-5,14-dihydroxycard-16,20(22)-dienolide; D002298:Cardenolides