Comatulins A-E, Taurine-Conjugated Anthraquinones from the Australian Crinoid Comatula rotalaria.

  title={Comatulins A-E, Taurine-Conjugated Anthraquinones from the Australian Crinoid Comatula rotalaria.},
  author={Kah Yean Lum and Aya C. Taki and Robin B. Gasser and Ian Tietjen and Merrick G Ekins and Jonathan M. White and Russell S. Addison and Sasha Hayes and James A. St John and Rohan A. Davis},
  journal={Journal of natural products},
Chemical investigations of two specimens of the Australian crinoid Comatula rotalaria afforded five new taurine-conjugated anthraquinones, comatulins A-E (1-5), together with 11 known marine natural products (6-16). The chemical structures of all the compounds were elucidated by detailed spectroscopic and spectrometric data analysis. The first X-ray crystal structure of a crinoid-derived acyl anthraquinone, rhodocomatulin 5,7-dimethyl ether (8), is reported here. Compounds 1, 2, 6-13, and two… 
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