Aurantosides G, H, and I: three new tetramic acid glycosides from a Papua New Guinea Theonella swinhoei.

@article{Ratnayake2005AurantosidesGH,
  title={Aurantosides G, H, and I: three new tetramic acid glycosides from a Papua New Guinea Theonella swinhoei.},
  author={Anokha S Ratnayake and Rohan A Davis and Mary Kay Harper and Charles A. Veltri and Cynthia D. Andjelic and Louis R Barrows and Chris M. Ireland},
  journal={Journal of natural products},
  year={2005},
  volume={68 1},
  pages={104-7}
}
Aurantosides G-I (1-3) have been isolated from the lithistid sponge Theonella swinhoei from Papua New Guinea. Their structures were established by spectroscopic and chemical methods. Compounds 1-3 represent new monochloropentaenoyl tetramic acids with mono-, di-, and tri-N-saccharide substituents, respectively. Aurantosides G-I (1-3) failed to show any significant cytotoxicity against the human colon tumor cell line HCT-116.