title: (1)H and (13)C NMR assignments of eight nitrogen containing compounds from Nocardia alba sp.nov (YIM 30243(T)).
abstract: An unprecedented new natural product named nocarsin A (1), 5H-4a,6,7a-triazacyclopenta[cd]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 30243(T)), 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 (1)H and (13)C NMR spectra of the new compound nocarsin A (1).
authors.affiliation: Key Laboratory for Microbial Resources, Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, PR China.
authors.forename: Zhang-Gui
authors.initials: ZG
authors.lastname: Ding
authors.forename: Jiang-Yuan
authors.initials: JY
authors.lastname: Zhao
authors.forename: Pei-Wen
authors.initials: PW
authors.lastname: Yang
authors.forename: Ming-Gang
authors.initials: MG
authors.lastname: Li
authors.forename: Rong
authors.initials: R
authors.lastname: Huang
authors.forename: Xiao-Long
authors.initials: XL
authors.lastname: Cui
authors.forename: Meng-Liang
authors.initials: ML
authors.lastname: Wen
mesh_terms: D002247:Carbon Isotopes; D005415:Flavins / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009615:Nocardia / Q000737:chemistry*; D010456:Peptides, Cyclic / Q000737:chemistry* / Q000302:isolation & purification; D010879:Piperazines / Q000737:chemistry* / Q000302:isolation & purification; D011522:Protons; D014498:Uracil / Q000031:analogs & derivatives* / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D002247:Carbon Isotopes; D005415:Flavins; D010456:Peptides, Cyclic; D010879:Piperazines; D011522:Protons; C540515:cyclo(alanyl-isoleucyl); C540516:cyclo(alanyl-leucyl); C540517:cyclo(valyl-alanyl); C001559:7,8-dimethylalloxazine; C032323:cyclo(L-leucyl-L-tryptophyl); D014498:Uracil