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Complete assignments of (1)H and (13)C NMR spectral data of nine surfactin isomers.

Tang JS, Gao H, Hong K, Yu Y, Jiang MM, Lin HP, Ye WC, Yao XS

College of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang 110016, PR China.

A new surfactin isomer (1) was isolated from a mangrove bacteria strain 'Bacillus sp'. Its structure was identified, and full assignments of (1)H and (13)C NMR spectral data were achieved for the first time by a combination of mass spectrometry and 1D and 2D NMR experiments including DEPT, (1)H-(1)H COSY, HSQC, HMBC, TOCSY, ROESY, and HSQC-TOCSY. The NMR spectral data of eight known analogs (2-9) are also reported.

Published 6 August 2007 in Magn Reson Chem, 45(9): 792-6.
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