Sagittamides A and B. Polyacetoxy long-chain acyl amino acids from a didemnid ascidian.

[structure: see text]. An unidentified tunicate from Pohnpei, Micronesia, yielded sagittamides A and B-compounds comprising a long-chain C26 dicarboxylic acid that acylates terminal L-valine and L-ornithine groups. The structures, which contain an unprecedented internal O-hexacetyl-1,2,3,4,5,6-hexaol moiety, were determined by combined spectroscopic… CONTINUE READING