title: Two new cyclolanostanol xylosides from the aerial parts of Cimicifuga dahurica.
abstract: From the aerial parts of Cimicifuga dahurica, two new cyclolanostanol xylosides, cimilactone A (1) and cimilactone B (2), and three known compounds were isolated. On the basis of spectral and chemical evidence, the structures of 1 and 2 were determined to be 12beta-acetoxy-3beta-O-D-xylopyranosyloxy-24,25,26,27-tetranor-9,19-cyclolanost-16,23-lactone (1) and 12beta-acetoxy-3beta-O-D-xylopyranosyloxy-24,25,26,27-tetranor-9,19-cyclolanost-7-ene-16,23-lactone (2). The known compounds were identified as cimigenol 3-O-beta-D-xylopyranoside, 23-O-acetylshengmanol-3-O-beta-D-xylopyranoside, and 25-O-acetylcimigenol-3-O-beta-D-xylopyranoside, respectively.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, People's Republic of China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.forename: Dihua
authors.initials: D
authors.lastname: Chen
authors.forename: Jianyong
authors.initials: J
authors.lastname: Si
authors.forename: Guangzhong
authors.initials: G
authors.lastname: Tu
authors.forename: Dongge
authors.initials: D
authors.lastname: An
mesh_terms: D031885:Cimicifuga / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D013057:Spectrum Analysis
chemical_list: D006027:Glycosides; D007783:Lactones; C468590:cimilactone A; C468591:cimilactone B