title: Four New Diterpenoids from the Roots of Euphorbia pekinensis.
abstract: Three new isopimarane diterpenoids (1 - 3) and one new abietane diterpenoid (4) were isolated and identified from the roots of Euphorbia pekinensis, together with four known diterpenoids. Their structures were elucidated on the basis of extensive spectroscopic methods (IR, MS, NMR, and CD), and their cytotoxicities and anticomplement activities were evaluated.
authors.affiliation: Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai, 201203, P. R. China.
authors.forename: Rui-Ying
authors.initials: RY
authors.lastname: Tian
authors.affiliation: Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai, 201203, P. R. China. luyan@fudan.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai, 201203, P. R. China. dfchen@shmu.edu.cn.
authors.forename: Dao-Feng
authors.initials: DF
authors.lastname: Chen
mesh_terms: D000818:Animals; D049109:Cell Proliferation; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D004912:Erythrocytes; D028481:Euphorbia / Q000737:chemistry*; D006168:Guinea Pigs; D006801:Humans; D008958:Models, Molecular; D008968:Molecular Conformation; D018517:Plant Roots / Q000737:chemistry*; D013237:Stereoisomerism; D014407:Tumor Cells, Cultured
chemical_list: D004224:Diterpenes
keywords: 
  Euphorbia pekinensis
  ; Abietane; Anticomplement activities; Cytotoxicity; Diterpenoids; Isopimarane