(1)H and (13)C NMR assignments of eight nitrogen containing compounds from Nocardia alba sp.nov (YIM 30243(T)).
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).
Ding
Zhang-Gui
ZG
Key Laboratory for Microbial Resources, Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, PR China.
Zhao
Jiang-Yuan
JY
Yang
Pei-Wen
PW
Li
Ming-Gang
MG
Huang
Rong
R
Cui
Xiao-Long
XL
Wen
Meng-Liang
ML
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
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