Dictyota crenulata

Brown algae are rich in diterpenoids, which can be classified into three groups, namely xenicanes, extended sesquiterpenes, and dolabellanes, which are represented by dictyotadial (121) from Dictyota crenulata, spatol (122) from Spatoglossum schmit-tii, and amijidictyol (123) from Dictyota linearis, respectively. 

Sun, H.H., F.J. McEnroe, and W. Fenical Acetoxycrenulide, a New Bicyclic Cyclopropane-Containing Diterpenoid from the Brown Seaweed Dictyota crenulata. 

Pachydictyon coriaceum Ishitsuka, Kusumi, and Kakisawa, 1982 Dictyota crenulata Kirkup and Moore, 1983... 

Three diterpenes with new carbon skeletons have been isolated from the species DUophus okamurae collected around Awashima Island, Japan, Dictyota crenulata harvested at Easter Island, and Dictyota dichotoma from Peter the Great Bay in the Sea of Japan. 

Kirkup, M.P. and Moore, R.E. (1983) Identity of sanadaol with 3-crenulal, a diterpene from die brown alga Dictyota crenulata. Phytochemistry, 22, 2527-2529. 

Sun, H.H., McEnroe, F.J., and Fenical, W. (1983) Acetoxycrenulide, a new bicyclic cyclopropane containing diterpenoid from the brown seaweed Dictyota crenulata. J. Org. Chem., 48,1903-1906. 

Food chains between sea hares and brown algae appear to be less frequent, but the one that has been studied between j lysia vaccaria and Dictyota crenulata leads to the same conclusions as for the red algae. Crenulide, isocre-nulide and a series of related diterpenes were isolated from these two organisms (Midland, Wing, and Sims, 1983 Sim, McEnroe, and Fenical, 1983). 

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