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Cytotoxic indole alkaloids from Tabernaemontana divaricata. 2013

Mei-Fen Bao, and Ju-Ming Yan, and Gui-Guang Cheng, and Xing-Yao Li, and Ya-Ping Liu, and Yan Li, and Xiang-Hai Cai, and Xiao-Dong Luo
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.

Five new vobasinyl-ibogan-type bisindole alkaloids, tabernaricatines A-E (1-5), two new monomers, tabernaricatines F and G (6 and 7), and 24 known indole alkaloids were isolated from the aerial parts of Tabernaemontana divaricata. Alkaloids 1 and 2 are the first vobasinyl-ibogan-type alkaloids possessing a six-membered ring via an ether linkage between C-17 and C-21. All compounds except for 3 were evaluated for their cytotoxicity against five human cancer cell lines; conophylline showed significant bioactivity against HL-60, SMMC-7721, A-549, MCF-7, and SW480 cells with IC₅₀ values of 0.17, 0.35, 0.21, 1.02, and 1.49 μM, respectively.

UI MeSH Term Description Entries
D004354 Drug Screening Assays, Antitumor Methods of investigating the effectiveness of anticancer cytotoxic drugs and biologic inhibitors. These include in vitro cell-kill models and cytostatic dye exclusion tests as well as in vivo measurement of tumor growth parameters in laboratory animals. Anticancer Drug Sensitivity Tests,Antitumor Drug Screens,Cancer Drug Tests,Drug Screening Tests, Tumor-Specific,Dye Exclusion Assays, Antitumor,Anti-Cancer Drug Screens,Antitumor Drug Screening Assays,Tumor-Specific Drug Screening Tests,Anti Cancer Drug Screens,Anti-Cancer Drug Screen,Antitumor Drug Screen,Cancer Drug Test,Drug Screen, Anti-Cancer,Drug Screen, Antitumor,Drug Screening Tests, Tumor Specific,Drug Screens, Anti-Cancer,Drug Screens, Antitumor,Drug Test, Cancer,Drug Tests, Cancer,Screen, Anti-Cancer Drug,Screen, Antitumor Drug,Screens, Anti-Cancer Drug,Screens, Antitumor Drug,Test, Cancer Drug,Tests, Cancer Drug,Tumor Specific Drug Screening Tests
D004365 Drugs, Chinese Herbal Chinese herbal or plant extracts which are used as drugs to treat diseases or promote general well-being. The concept does not include synthesized compounds manufactured in China. Chinese Herbal Drugs,Plant Extracts, Chinese,Chinese Drugs, Plant,Chinese Plant Extracts,Extracts, Chinese Plant,Herbal Drugs, Chinese
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000972 Antineoplastic Agents, Phytogenic Agents obtained from higher plants that have demonstrable cytostatic or antineoplastic activity. Antineoplastics, Botanical,Antineoplastics, Phytogenic,Agents, Phytogenic Antineoplastic,Botanical Antineoplastics,Phytogenic Antineoplastic Agents,Phytogenic Antineoplastics
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D018922 HL-60 Cells A promyelocytic cell line derived from a patient with ACUTE PROMYELOCYTIC LEUKEMIA. HL-60 cells lack specific markers for LYMPHOID CELLS but express surface receptors for FC FRAGMENTS and COMPLEMENT SYSTEM PROTEINS. They also exhibit phagocytic activity and responsiveness to chemotactic stimuli. (From Hay et al., American Type Culture Collection, 7th ed, pp127-8) HL60 Cells,Cell, HL60,Cells, HL60,HL 60 Cells,HL-60 Cell,HL60 Cell
D020128 Inhibitory Concentration 50 The concentration of a compound needed to reduce population growth of organisms, including eukaryotic cells, by 50% in vitro. Though often expressed to denote in vitro antibacterial activity, it is also used as a benchmark for cytotoxicity to eukaryotic cells in culture. IC50,Concentration 50, Inhibitory
D026121 Indole Alkaloids Group of alkaloids containing a benzylpyrrole group (derived from TRYPTOPHAN). Indole Alkaloid,Alkaloid, Indole,Alkaloids, Indole
D030014 Tabernaemontana A plant genus of the family APOCYNACEAE that contains bisindole alkaloids and IBOGAINE. Anartia Plant,Bonafousia,Ervatamia,Iboga,Muntafara,Pagiantha,Peschiera,Pterotaberna,Reichardia,Sarcopharyngia,Stemmadenia,Taberna Plant,Tabernaemontaneae,Tabernanthe iboga,Anartia Plants,Bonafousias,Ervatamias,Ibogas,Muntafaras,Pagianthas,Peschieras,Plant, Taberna,Pterotabernas,Reichardias,Sarcopharyngias,Stemmadenias,Taberna Plants,Tabernaemontanas

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