Plocamium coccineum

In order to confirm the biotransformation capability of the sea hare -Aplysia punctata, Quinoa et al. (46) studied a number of marine algae for the presence of halogenated monoteipenes and compared the hplc and gc profiles of the extracts of the hepatopancreas of A. punctata with algal extracts. The results of this study showed a direct correlation between the chromatographic and gc-ms profile of the secondary metabolites of Plocamium coccineum and A. punctata. However, no biotransformation capability was noticed. 

Subclass Florideae Order Gigartinales Plocamium coccineum (Klenk etal., 1963) ... 

Castedo, L., Garcia, M.L., Quinoa, E., and Riguera, R. (1984) Halogenated monoterpenes from Plocamium coccineum of Northwest Spain./. Nat. Prod., 47, 724-726. 

All natural organobromocompounds are of marine origin and have been found especially in algae. The genus Laurencia has provided a series of brominated acetylenic cyclic ethers and bromosesquiterpenes, two of which, aplysin and aplysinol, were isolated earlier from the sea hare, Aplysia kurodai. Reviews by Scheuer 160) and Premuzic (752) may be consulted and also the more recent papers 87, 93, 102, 103, 107, 128, 129, 130). A brominated bicyclic diterpenoid, aplysin-20, with unusual stereochemical features has been also isolated from Aplysia kurodai 186), and more recently unique brominated and chlorinated monoter-penes have been obtained from A. californica 85) 86). Two of them were also found as components of an extract of the alga Plocamium coccineum... 

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