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Tri cyclic di terpenoids of the dolastane ring system from the marine alga dictyota divaricata


, : Tri cyclic di terpenoids of the dolastane ring system from the marine alga dictyota divaricata. Tetrahedron 37(6): 1237-1242

Four new oxygenated tricyclic diterpenoids were isolated from the Carribean brown alga D. divaricata. The structures of these new compounds were secured by an X-ray analysis of a convenient diol derivative, followed by interconversion where possible. The new diterpenoids belong to the dolastane group 1st isolated from the herbivorous mollusk, Dolabella auricularia, and their isolation here indicates that the sea hare probably derived these compounds from brown seaweeds of the family Dictyotaceae.

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