Two New Phthalate Derivatives from the Marine Sponge Haliclona sp.

Two new phthalate derivatives, N1-(2-aminoethyl)-N2-isopentylphthalamide (1) and N1-isobuty-N2-tridecylphthalamide (2), were isolated from the marine sponge Haliclona sp. The structures of the new isolates were elucidated on the basis of extensive spectroscopic analysis and by comparison of the data with those of related secondary metabolites.