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Marine natural products: pyrrololactams from several sponges |
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| Authors: | F J Schmitz S P Gunasekera V Lakshmi L M Tillekeratne |
| Abstract: | Two pyrrololactams, likely degradation products of more complex known guanidines, were isolated from several marine sponges. 5-Bromo- and 4,5-dibromopyrrole-1-carboxylic acid methyl esters were also isolated. A complex guanidine metabolite, poorly soluble in DMSO, was found to give sharp, reproducible nmr spectra in acid media. |
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