A. Almourabit et al., PYRAXININE, A NOVEL NITROGENOUS COMPOUND FROM THE MARINE SPONGE CYMBASTELA-CANTHARELLA, Journal of natural products, 60(3), 1997, pp. 290-291
Four minor polar nitrogen compounds have been isolated from the New Ca
ledonian marine sponge, Cymbastela cantharella. Three are the known pr
oducts allantoin, homarine, and trigonelline and the fourth is novel.
The structure of the new compound, pyraxinine (1), was shown to be 3-p
yridylguanidine by spectroscopic analysis and synthesis.