Journal
TETRAHEDRON
Volume 70, Issue 17, Pages 2711-2716Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2014.03.005
Keywords
3-Oxyanthranilic acid derivatives; Actinomycetes; Actinomadura; Antitubercular
Categories
Funding
- National Center for Genetic Engineering and Biotechnology (BIOTEC)
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Eight new compounds including 9'-(2-amino-3-(4 ''-O-methyl-alpha-rhamnopyranosyloxy) phenyl]nonanoic acid (1), 9'[2-amino-3-(4 ''-O-methyl-m-ribopyranosyloxy)phenyl] nonanoic acid (2), 11'-[2-amino-3-(4 ''-O-methyl-alpha-rhamnopyranosyloxy)phenyl]undecanoic acid (3), 11'-[2-amino-3-(4 ''-O-methyl-a-ribopyranosyloxy)phenyl]undecanoic acid (4), 8-(4'-O-methyl-alpha-rhamnopyranosyloxy)-3,4-dihydroquinolin-2(1H)-one (5), 8-(4'-O-methyl-a-ribopyranosyloxy)-3,4-dihydroquinolin-2(1H)-one (6), 8-(4'-O-methyl-a-rhamnopyranosyloxy)-2-methyquinoline (7), and 8-(4'-O-methyl-a-ribopyranosyloxy)-2-methylquinoline (8) were isolated from Actinomadura sp. BCC27169. The chemical structures of these compounds were determined based on NMR and high-resolution mass spectroscopy. The absolute configurations of these monosaccharides were revealed by the hydrolysis of compounds 7 and 8. Compounds 3 and 8 exhibited antitubercular activity at MIC 50 mu/mL. Only compound 3 showed cytotoxicity against KB cell at IC50 18.63 mu g/mL, while other isolated compounds were inactive at tested maximum concentration (50 mu g/mL). (C) 2014 Elsevier Ltd. All rights reserved.
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