Murata,-M.; Legrand,-A.M.; Ishibashi,-Y.; Yasumoto,-T.  
	Structures of ciguatoxin and its congener.  J.-AM.-
	CHEM.-SOC. 1989. vol. 111, no. 24, pp. 8929-8931.

Ciguatoxin (CTX) is a toxic principle of ciguatera, one of 
the largest scale food poisonings of nonmicrobial origins, 
which results from eating coral reef fish. Its structure has 
thus become one of the most challenging targets among 
natural-product chemists. In the previous reports, we have 
presented a molecular formula, C sub(60)H sub(86)O sub(19), 
and a partial structure (C1-C22) of the toxin, including the 
stereochemistry. We report here the elucidation of the rest 
of the molecule (C23-C60), resulting in the determination of 
the planar structure of the whole molecule.