title: Sesquiterpene lactone glycosides, eudesmanolides, and other constituents from Carpesium macrocephalum.
abstract: Two new sesquiterpene lactone glycosides and two new eudesmanolides, along with twelve known compounds were isolated from seeds of Carpesium macrocephalum. The structures of these new compounds were elucidated as 2alpha- O-beta- D-glucopyranosyl-5alpha, 11alpha H-eudesma-4(15)-en-12,8beta-olide ( 1), 2alpha- O-beta- D-glucopyranosyl-5alpha H-eudesma-4(15),11(13)-dien-12,8beta-olide ( 2), 2alpha-acetoxy-5alpha-hydroxy-11alpha H-eudesma-4(15)-en-12,8beta-olide ( 3) and 2alpha,5alpha-dihydroxy-11alphaH-eudesma-4(15)-en-12,8beta-olide ( 4) by spectroscopic methods including 2D NMR techniques ( (1)H- (1)H COSY, (1)H- (1)H NOESY, HMQC, HMBC) and chemical transformations. Compounds 1, 6, 8, 9 and 10 exhibited moderate antibacterial activity, while compound 4 showed appreciable cytotoxic activity against cultured SMMC-7721 (human hepatoma cell).
authors.affiliation: Department of Chemistry, National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, P R China.
authors.forename: Chao
authors.initials: C
authors.lastname: Yang
authors.forename: Yan-Ping
authors.initials: YP
authors.lastname: Shi
authors.forename: Zhong-Jian
authors.initials: ZJ
authors.lastname: Jia
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D019659:Asteraceae / Q000737:chemistry*; D001412:Bacillus subtilis / Q000187:drug effects; D004354:Drug Screening Assays, Antitumor; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D014407:Tumor Cells, Cultured
chemical_list: D000900:Anti-Bacterial Agents; D000970:Antineoplastic Agents; D005960:Glucosides; D007783:Lactones; D012717:Sesquiterpenes