Spirobacillenes A and B, unusual spiro-cyclopentenones from Lysinibacillus fusiformis KMC003.

@article{Park2012SpirobacillenesAA,
  title={Spirobacillenes A and B, unusual spiro-cyclopentenones from Lysinibacillus fusiformis KMC003.},
  author={Hyun Bong Park and Young-Joo Kim and Jae Kyun Lee and Kang Ro Lee and Hak Cheol Kwon},
  journal={Organic letters},
  year={2012},
  volume={14 19},
  pages={
          5002-5
        }
}
Two previously unreported spiro-cyclopentenones, spirobacillenes A (1) and B (2), were isolated from the 24 h broth culture of Lysinibacillus fusiformis KMC003 derived from acidic coal-mine drainage. The structures of 1 and 2 were elucidated by analyses of the NMR, HRFABMS, single-crystal X-ray diffraction crystallography, and circular dichroism (CD) spectral data. Compound 1 possessed moderate inhibitory activity against the production of nitric oxide (NO) and reactive oxygen species (ROS). 
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