title: Lakoochins A and B, new antimycobacterial stilbene derivatives from Artocarpus lakoocha.
abstract: Two new stilbene derivatives, lakoochins A (1) and B (2), were isolated from the roots of Artocarpus lakoocha. The structures of 1 and 2 were elucidated by analysis of their spectral data. Lakoochins A (1) and B (2) exhibited antimycobacterial activity with the respective MIC values of 12.5 and 50 microg/mL. While 1 was cytotoxic against the BC (breast cancer) cell line (IC(50) 6.1 microg/mL) but inactive (at 20 microg/mL) toward KB (nasopharyngeal carcinoma) cells, compound 2 possessed cytotoxicity against the BC and KB cell lines with IC(50) values of 3.1 and 6.1 microg/mL, respectively.
authors.affiliation: Department of Chemistry, Faculty of Science, Mahidol University, Thailand.
authors.forename: Apirak
authors.initials: A
authors.lastname: Puntumchai
authors.forename: Prasat
authors.initials: P
authors.lastname: Kittakoop
authors.forename: Shuleewan
authors.initials: S
authors.lastname: Rajviroongit
authors.forename: Saovaluk
authors.initials: S
authors.lastname: Vimuttipong
authors.forename: Kittisak
authors.initials: K
authors.lastname: Likhitwitayawuid
authors.forename: Yodhathai
authors.initials: Y
authors.lastname: Thebtaranonth
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D031622:Artocarpus / Q000737:chemistry*; D004354:Drug Screening Assays, Antitumor; D005260:Female; D006801:Humans; D020128:Inhibitory Concentration 50; D007624:KB Cells; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D009169:Mycobacterium tuberculosis / Q000187:drug effects; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013237:Stereoisomerism; D013267:Stilbenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013785:Thailand; D014407:Tumor Cells, Cultured
chemical_list: D000900:Anti-Bacterial Agents; D000970:Antineoplastic Agents; D013267:Stilbenes; C485026:lakoochin A; C485027:lakoochin B