Abstract
Chemical examination of the marine sponge Pseudoceratina sp. resulted in the isolation and characterization of two new dibromotyrosine-derived metabolites (1–2), and a new histamine-derived alkaloid (3), along with eight known dibromotyrosine based products. Their structures were elucidated on the basis of IR, 1D and 2D NMR, and MS spectral data analyses.
Acknowledgements
This work was supported by grants from NSFC (No. 30672607), the National Hi-Tech Projects (2006AA09Z446, 2006DFA31100), China Uni-PhD Base Project (20060001149), and the International Cooperation Projects of “2 + 2” BMBF-MOST.