journals/orlef7/10/i03/figures/ol702866mn00002.gif" ALIGN="left" HSPACE=5> |
New debromopyrrole-2-aminoimidazolones, debromodispacamide B (
1) and debromodispacamide D (
2) were isolated from the sponge
Agelasmauritiana, collected in the Solomon Islands. A biomimetic one-step reaction from pseudopeptides
5 and
13 in presence of air oxygen andguanidine gave the chiral form of the natural product stereoselectively.