Plakortinic acids C and D: a pair of peroxide-polyketides possessing a rare 7,8-dioxatricyclo[4.2.2.02,5]dec-9-ene core from a two-sponge association of Plakortis symbiotica-Xestospongia deweerdtae
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Plakortinic acids C (3) and D (4), two unprecedented peroxide-polyketides with 7,8-dioxatricyclo[4.2.2.02,5]dec-9-ene scaffold, as well as known biogenetically related congeners, plakortinic acids A (1) and B (2), were isolated from a two-sponge association of... ...
