| viridamides a and b, lipodepsipeptides with antiprotozoal activity from the marine cyanobacterium oscillatoria nigro-viridis. | parallel chemical and phylogenetic investigation of a marine cyanobacterium from panama led to the isolation of two new pks-nrps-derived compounds, viridamides a and b. their structures were determined by nmr and mass spectroscopic methods, and the absolute configurations assigned by marfey's method and chiral hplc analysis. in addition to six standard, n-methylated amino and hydroxy acids, these metabolites contained the structurally novel 5-methoxydec-9-ynoic acid moiety and an unusual proline ... | 2008 | 18715036 |