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A new pseudopteranoid, 11 -gorgiacerol [2], has been isolated, along with previously described pseudopteranoids, from Pseudopterogorgia acerosa. The structure of 2 was established by 2D nmr spectroscopy.The gorgonian coral Pseudopterogorgia acerosa Pallas (Gorgoniidae) provided the first pseudopteranoid, pseudopterolide, 1(1), which stimulated considerable interest because of its chemical complexity and biological activity. When we subsequently studied collections of P. acerosa made at several locations off the coast of Tobago, we isolated and established the structures of a considerable number of novel diterpenoids. The array of metabolites isolated was found to vary markedly

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