Absolute configuration of the common terminal acid portion of zooxanthellatoxins from a symbiotic dinoflagellate Symbiodinium sp. established by the synthesis of its ozonolysis product

To determine the absolute configuration of the common C25 long chain acid part (L) of zooxanthellatoxins, the degradation product derived from the terminal carboxylic acid portion of L was synthesized from glucose and used to establish that the total absolute configuration of L was 3R,4R,5S,7S,11S,12S,13R,14S,15R,17R,18R.