T. Yosief et al., 2 NEW C-22 1,2-DIOXANE POLYKETIDES FROM THE MARINE SPONGE ACARNUS CF.BERGQUISTAE, Journal of natural products, 61(4), 1998, pp. 491-493
Two new cyclic peroxide-containing polyketide C-22 methyl esters, pero
xyacarnoic acid methyl esters A and B, 1 and 2, have been isolated fro
m the Red Sea marine sponge Acarnus cf. bergquistae. Both 1 and 2 are
proposed to contain a single 1,2-dioxane ring, an eneyne functionality
, and a terminal double bond or triple bond, respectively. The structu
res were elucidated mainly through 1D and 2D NMR spectral analysis.