Leucetta leptorhapsis

Leucetta leptorhapsis, the Antarctic rubber sponge, so called due to its stretched appearance, produces the acetogenin rhapsamine (Structure 7.22), which bears the unusual bis(l,3-diaminoglyc-erol) group.39 Rhapsamine has antipredatory and cytotoxic activity and is structurally related to the coriacenins, which are produced by the Mediterranean sponge Clathria coriacea.104... 

Jayatilake, G., Baker, B. J., and McClintock J. B., Rhapsamine, a cytotoxin from the Antarctic sponge Leucetta leptorhapsis, Tetrahedron Lett., 38, 7507, 1997. 

C34H40N4O2, Mr 556.87, amorphous solid [a] 0°, presumably racemic. A cytotoxic alkaloid from the Mi-cronesian sponge Leucetta leptorhapsis, also known as rubber sponge. 

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