Dendridine A, a bis-indole alkaloid from a marine sponge Dictyodendrilla Species.

@article{Tsuda2005DendridineAA,
  title={Dendridine A, a bis-indole alkaloid from a marine sponge Dictyodendrilla Species.},
  author={Masashi Tsuda and Yohei Takahashi and Jane Fromont and Yuzuru Mikami and Jun’ichi Kobayashi},
  journal={Journal of natural products},
  year={2005},
  volume={68 8},
  pages={
          1277-8
        }
}
A unique C2-symmetrical 4,4'-bis(7-hydroxy)indole alkaloid, dendridine A (1), was isolated from an Okinawan marine sponge Dictyodendrilla sp., and the structure was elucidated by spectroscopic data. Dendridine A (1) exhibited antibacterial and antifungal activities. 
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