Abstract
Two new dimeric sesquiterpenoid quinones, nakijiquinones E ( 1) and F ( 2), have been isolated from an Okinawan marine sponge, and the structures and relative stereochemistry of 1 and 2 were elucidated on the basis of the spectral data. Nakijiquinones E ( 1) and F ( 2) were the first dimeric sesquiterpenoid quinones possessing a 3-aminobenzoate moiety.
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