title: ent-Abietane and ent-kaurane diterpenoids from the roots of Suregada glomerulata.
abstract: Twelve ENT-abietane and ENT-kaurane type diterpenoids, 1- 12, including five new compounds 1- 5, were isolated from the roots of Suregada glomerulata. The structures of the new compounds were elucidated on the basis of 1D and 2D NMR and other spectroscopic studies, and the structures of 1 and 2 were confirmed by X-ray crystallography. Cytotoxic activities against five human tumor cell lines were evaluated.
authors.affiliation: Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China.
authors.forename: Su-Li
authors.initials: SL
authors.lastname: He
authors.forename: Ren-Yi
authors.initials: RY
authors.lastname: Yan
authors.forename: Li
authors.initials: L
authors.lastname: Zuo
authors.forename: Ruo-Yun
authors.initials: RY
authors.lastname: Chen
mesh_terms: D045784:Abietanes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D045744:Cell Line, Tumor; D045786:Diterpenes, Kaurane / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology; D018517:Plant Roots; D029843:Suregada / Q000737:chemistry*
chemical_list: D045784:Abietanes; D000972:Antineoplastic Agents, Phytogenic; D045786:Diterpenes, Kaurane; D010936:Plant Extracts