Spongiapyridine and Related Spongians Isolated from an Indonesian Spongia sp.

@article{Parrish2014SpongiapyridineAR,
  title={Spongiapyridine and Related Spongians Isolated from an Indonesian Spongia sp.},
  author={Stephen M. Parrish and Wesley. Yoshida and Tamara P. Kondratyuk and Eun-Jung Park and John M. Pezzuto and Michelle Kelly and Philip G Williams},
  journal={Journal of Natural Products},
  year={2014},
  volume={77},
  pages={1644 - 1649}
}
New compounds 18-nor-3,17-dihydroxyspongia-3,13(16),14-trien-2-one (1), 18-nor-3,5,17-trihydroxyspongia-3,13(16),14-trien-2-one (2), and spongiapyridine (3) and the known compound 17-hydroxy-4-epi-spongialactone A (4) were isolated from an Indonesian sponge of the genus Spongia. The structures of 1–3 were deduced by analyses of physical and spectroscopic data. Diterpene 3 is unusual, as the D-ring is a pyridyl ring system rather than the standard δ-lactone. The structure elucidation of this… 
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