Spongiadioxins A and B, two new polybrominated dibenzo-p-dioxins from an Australian marine sponge Dysidea dendyi.

  title={Spongiadioxins A and B, two new polybrominated dibenzo-p-dioxins from an Australian marine sponge Dysidea dendyi.},
  author={Natalia K Utkina and Vladimir Denisenko and Olga V. Scholokova and Marina V. Virovaya and Andrey V. Gerasimenko and D. Yu. Popov and Vladimir B. Krasokhin and Alexander M. Popov},
  journal={Journal of natural products},
  volume={64 2},
Two new cytotoxic tetrabromodibenzo-p-dioxins, spongiadioxins A (1) and B (2), were isolated from an Australian marine sponge Dysidea dendyi. The structures of these compounds were established by 1D and 2D NMR spectroscopy, X-ray analysis of the methyl ether of spongiadioxin A (3), and synthesis of the methyl ether of spongiadioxin B (4) from diphenyl ether (9) isolated from Dysidea herbacea. 
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