Salaramides A and B; Two α-Oxoamides Isolated from the Marine Sponge Hippospongia sp. (Porifera, Dictyoceratida)
2010 ◽
Vol 5
(2)
◽
pp. 1934578X1000500
Keyword(s):
2D Nmr
◽
Two novel α-oxoamides, salaramide A (1) and its homologue salaramide B (2), were isolated from the Madagascar marine sponge, Hippospongia sp., collected in Salary Bay, north of Tulear. The structures of 1 and 2 were elucidated by interpretation of mass spectra, 1D and 2D NMR spectra, and confirmed by chemical transformation.