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New cyclic polyketide peroxides from okinawan marine sponge plakortis sp
Fontana1, Ishibashi, Shigemori
1Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
Journal of Natural Products
|December 3, 1998
Abstract:
Three new cyclic peroxides (2-4) have been isolated from the Okinawan marine sponge Plakortis sp., and the structures were elucidated by extensive spectroscopic analyses. The absolute stereochemistries of 2 and 3 were determined by chemical conversion, whereas that of the dioxane ring of 4 was assigned by the modified Mosher's method.