Eunicea species

Figure 20.55 Examples of dolabellane derivatives isolated from Clavularia, Convexella, and Eunicea species.

Shin, J. and Fenical, W. (1993) Eunicenones A and B Diterpenoids cyclohexenones of a rare skeletal class from a new species of the Caribbean gorgonian Eunicea. Tetrahedron, 49, 9277-9284. 

OH-22 0 (Eunicea and Gorgonia) were identified with contents generally below 1%, except for 2-OH-20 0 and 2-OH-22 0 in Eunicea laciniata, where they occur at 5.9% and 3.9%, respectively. Species of the genus Pterogorgia do not contain 2-hydroxy acids. 

Figure 20.41 Examples of cubitane derivatives of Eunicea calyculata and pseudopteranes of Pseudopterogorgia species...

The species Planaxis sulcatus, harvested at Heron Island (Australia), yielded five diterpenes with a cembrane carbon skeleton jeunicin, which is one of the first examples of a cembranolide isolated from the gorgonian Eunicea mam-mosa (Weinheimer, Schmitz, and Ciereszko, 1968 Van der Helm et al, 1976 Sanduja et al, 1986a), dihydrosinularin and 11-epi-sinulariolide (Sanduja et al, 1986b), a new non-lactonic cembranolide (Linz et al, 1986), and planaxool, an unusual homocembranolide bearing a hydroperoxide... 

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