1H and 13C NMR assignments of eight nitrogen containing compounds from Nocardia alba sp.nov (YIM 30243T) |
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| Authors: | Zhang‐Gui Ding Jiang‐Yuan Zhao Pei‐Wen Yang Ming‐Gang Li Rong Huang Xiao‐Long Cui Meng‐Liang Wen |
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| Institution: | 1. Key Laboratory for Microbial Resources, Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, P. R. China;2. Institute of Agriculture Environment and Resource, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan 650205, P. R. China;3. Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, Yunnan University, Kunming, Yunnan 650091, P. R. China |
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| Abstract: | An unprecedented new natural product named nocarsin A (1), 5H‐4a,6,7a‐triazacyclopentacd]indene‐5,7(6H)‐dione (1), together with seven known compounds lumichrome (2), cyclo (L ‐Leu‐L ‐Tyr) (3), cyclo (L ‐Ala‐L ‐Ile) (4), cyclo (L ‐Ala‐L ‐Leu) (5), cyclo (L ‐Val‐L ‐Ala) (6), 5‐methyluracil (7) and uracil (8), was isolated from Nocardia alba sp.nov (YIM 30243T), which was isolated from a soil sample collected from Yunnan Province, P. R. China. NMR techniques including COSY, HSQC, ROESY, and HMBC were used to elucidate the structures of these compounds. We report the unambiguous assignments of the 1H and 13C NMR spectra of the new compound nocarsin A (1). Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | 1H NMR 13C NMR 2D NMR nocarsin A lumichrome cyclopeptides Nocardia alba sp nov |
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