Luteophanol is a type of organic compound. There are variants labeled luteophanol A through luteophanol D. They contain the following common fragments with amphidinols:
Polyhydroxyl groups. Two tetrahydropyran rings.
Luteophanols have demonstrated antibacterial properties, but unlike amphidinols, they do not show antifungal activity.
References Y. Doi et al., "Luteophanol A, a New Polyhydroxyl Compound from Symbiotic Marine Dinoflagellate Amphidinium sp.", Journal of Organic Chemistry (1997) Abstract of article on Luteophanol D