title: Diterpenes from the berries of Juniperus excelsa.
abstract: From the hexane extract of berries of Juniperus excelsa, one new and four known diterpenes were isolated besides a known sesquiterpene. The structures of the known diterpenes were identified as isopimaric, isocommunic, (-)ent-trans communic and sandracopimaric acids, along with the sesquiterpene 4a-hydroxycedrol and the new compound which was elucidated as 3 alpha-acetoxylabda-8(17),13(16),14-trien-19-oic acid (juniperexcelsic acid). Cytotoxic activity of the hexane extract was investigated against a panel of cell line and found highly active against LNCaP, KB-V (+VLB) and KB-V (-VLB) cell lines. Furthermore, the hexane and methanol extracts, and the new compound were found to be moderately active against Mycobacterium tuberculosis.
authors.affiliation: Department of Chemistry, Marmara Research Center, TUBITAK, Kocaeli, Turkey.
authors.forename: G
authors.initials: G
authors.lastname: Topçu
authors.forename: R
authors.initials: R
authors.lastname: Erenler
authors.forename: O
authors.initials: O
authors.lastname: Cakmak
authors.forename: C B
authors.initials: CB
authors.lastname: Johansson
authors.forename: C
authors.initials: C
authors.lastname: Celik
authors.forename: H B
authors.initials: HB
authors.lastname: Chai
authors.forename: J M
authors.initials: JM
authors.lastname: Pezzuto
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D005638:Fruit / Q000737:chemistry*; D006586:Hexanes / Q000737:chemistry; D006801:Humans; D018653:Juniperus / Q000737:chemistry*; D007624:KB Cells / Q000187:drug effects; D007941:Leukemia P388 / Q000188:drug therapy; D008826:Microbial Sensitivity Tests; D009169:Mycobacterium tuberculosis / Q000187:drug effects; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D000970:Antineoplastic Agents; D004224:Diterpenes; D006586:Hexanes; D010936:Plant Extracts