title: Melodinines A-G, monoterpenoid indole alkaloids from Melodinus henryi.
abstract: Nineteen monoterpenoid indole alkaloids including seven new ones, melodinines A-G (1-7), were isolated from Melodinus henryi. The structures of the new compounds were elucidated using spectroscopic methods, and the structure of compound 4 was confirmed by single-crystal X-ray diffraction analysis. The known compounds were identified by comparing their spectroscopic data with those reported in the literature. All of the compounds were evaluated for cytotoxic activity against five human cancer cell lines, and compound 11 exhibited cytotoxicity against HL-60, SMMC-7721, A-549, and SK-BR-3 cells with IC50 values of 2.0, 16.8, 25.9, and 24.7 microM, respectively.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China.
authors.forename: Tao
authors.initials: T
authors.lastname: Feng
authors.forename: Xiang-Hai
authors.initials: XH
authors.lastname: Cai
authors.forename: Ya-Ping
authors.initials: YP
authors.lastname: Liu
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Wang
authors.forename: Xiao-Dong
authors.initials: XD
authors.lastname: Luo
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification*; D029062:Apocynaceae / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004354:Drug Screening Assays, Antitumor; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D018922:HL-60 Cells; D006801:Humans; D015394:Molecular Structure; D046948:Secologanin Tryptamine Alkaloids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004365:Drugs, Chinese Herbal; D046948:Secologanin Tryptamine Alkaloids