Laurencia concinna

Sims, J.J., Lin, G.H.Y., Wing, R.M. and Fenical, W., 1973. Marine natural products. Concinndiol, a bromo-diterpene alcohol from the red alga Laurencia concinna. J. Chem. Soc., Chem. Common., 1973 470—471. 

The food chain between the Japanese species Aplysia kurodai and Laurencia concinna (Ceramiales) and Laurencia perforata yielded three closely related brominated diter-penes aplysin-20 was found only in the sea hare (Matsuda et al, 1967) isoaplysin-20 was identified in the mollusk and in Laurencia perforata and concinndiol was isolated only from Laurencia concinna. These three structures and their biosynthetic patterns are presented in Chapter 13. More recently, the food chain between the species Aplysia parvula and the red alga Laurencia filiformis, harvested in Tasmania, has led to similar comments (Jongaramruong et al, 2002). Other examples of brominated diterpenes found in Aplysia and Laurencia are presented in Chapter 13 (see also Komprobst and Al Easa, 2003). 

A brominated diterpene, concinndiol, an isomer of aplysin-20, has been recently described from the alga Laurencia concinna (171). Some simple bromophenols also occur in algae (160, p. 88) and a highly brominated phenolic pyrrole has been found in a marine bacterium (111, 132). 

Sims, J. J., G. H. Y. Lin, R. M. Wing, and W. Fenical Marine Natural Products. Concinndiol, A Bromo-Diterpene Alcohol from the Red Alga, Laurencia concinna. J. C. S. Chem. Comm. 1973, 470. 

---