title: [A new C21 steroidal saponins from Periplocae Cortex].
abstract: To study the chemical constituents of Periplocae Cortex, the separation and purification of 70% alcohol extract were carried out by column chromatographies on AB-8 macroporous resin, silica gel and preparative HPLC. The structure of the compounds were identified by NMR and TOF-MS. A new compound was isolated and identified as 21-O-methyl-Δ5-pregnene-3β, 14β, 17β, 21-tetraol-20-one-3-O-β-D-oleandropyranosyl(1-->4)-β-D-cymaropyranosyl-(1-->4)-β-D-cymaropyranosyl (1), named as periplocoside P.
authors.forename: Ying
authors.initials: Y
authors.lastname: Liu
authors.forename: Yue
authors.initials: Y
authors.lastname: Ouyang
authors.forename: Zong-quan
authors.initials: ZQ
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Qiao
authors.forename: Song
authors.initials: S
authors.lastname: Li
authors.forename: Shao-hua
authors.initials: SH
authors.lastname: Zhao
authors.forename: Min-yan
authors.initials: MY
authors.lastname: Liu
mesh_terms: D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D031109:Periploca / Q000737:chemistry*; D011283:Pregnenes / Q000737:chemistry / Q000302:isolation & purification*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D006027:Glycosides; D011283:Pregnenes; D012503:Saponins; C000599497:periplocoside P