Abstract
The chemical investigation of the Brazilian marine sponge Plakortis angulospiculatus led to the isolation of the new peroxide-derived polyketide plakilactone J (1). The structure of (−)-1 was established by means of HRMS and NMR analysis, while its absolute configuration was unambiguously determined as (4R,6R) by vibrational circular dichroism spectroscopy and density functional theory calculations.
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