Asmarines I, J, and K and Nosyberkol:  Four New Compounds from the Marine Sponge Raspailia sp.

Journal of Natural Products
2004.0

Abstract

Five asmarines, the known A and F and three new ones, I, J, and K, and four diterpenes, the known chelodane, barekoxide, and zaatirin and a new one, nosyberkol, were isolated from the Nosy Be Islands (Madagascar) sponge Raspailia sp. The structures of all these compounds were established on the basis of MS and NMR data. A biogenesis for the various Raspailia sp. diterpenes is suggested.

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