Abstract
An investigation of the oxylipin chemistry of the temperate brown alga Cymathere triplicata led to the isolation of several secondary metabolites, cymatherelactone ( 1) and cymatherols A− C ( 2– 4), the latter as their methyl ester derivatives ( 5– 7), which contained cyclopentyl, cyclopropyl, epoxide and lactone rings. Their structures were elucidated using a combination of spectroscopic techniques and synthetic chemistry. Cymatherelactone ( 1), as well as R- and S-Mosher’s esters of its seco acid, exhibited moderate sodium channel blocking activity.
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