title: Anti-inflammatory and cytotoxic diterpenes from formosan Polyalthia longifolia var. pendula.
abstract: A new clerodane diterpenoid 16-hydroxycleroda-13-ene-15,16-olide-3-one (1) was isolated from the bark of Polyalthia longifolia var. pendula, along with 23 known compounds and phytosteroids. Among these compounds, 5 - 7, 10, and 24 were obtained for the first time from the family Annonaceae . The structures of the isolated compounds were determined by mass and spectroscopic analysis. The clerodane diterpenoids, 2 - 4, showed significant cytotoxicity towards Hep G2 and Hep 3B hepatoma cell lines. Furthermore, compound 5 exhibited potent anti-inflammatory activity towards formyl-L-methionyl-L-leucyl-L-phenylalanine/cytochalasin B (fMLP/CB)-induced superoxide generation by neutrophils with IC50 = 0.60 +/- 0.09 microg/mL.
authors.affiliation: Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC.
authors.forename: Fang-Rong
authors.initials: FR
authors.lastname: Chang
authors.forename: Tsong-Long
authors.initials: TL
authors.lastname: Hwang
authors.forename: Yu-Liang
authors.initials: YL
authors.lastname: Yang
authors.forename: Chia-En
authors.initials: CE
authors.lastname: Li
authors.forename: Chin-Chung
authors.initials: CC
authors.lastname: Wu
authors.forename: Hamad H
authors.initials: HH
authors.lastname: Issa
authors.forename: Wen-Bin
authors.initials: WB
authors.lastname: Hsieh
authors.forename: Yang-Chang
authors.initials: YC
authors.lastname: Wu
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D001943:Breast Neoplasms / Q000473:pathology; D045744:Cell Line, Tumor / Q000187:drug effects; D004224:Diterpenes / Q000008:administration & dosage / Q000494:pharmacology / Q000627:therapeutic use; D006801:Humans; D013058:Mass Spectrometry; D009504:Neutrophils / Q000187:drug effects; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D018515:Plant Leaves; D031044:Polyalthia
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D000972:Antineoplastic Agents, Phytogenic; D004224:Diterpenes; D010936:Plant Extracts