1 Laboratoire de Chimie des Substances Naturelles et des Sciences des Aliments, Faculté des Sciences et Techniques, Université de la Réunion, 15 avenue René Cassin, Saint-Denis messag, Cedex 9, France. [email protected]
A new steroidal alkaloid, plakinamine L (1) with an unprecedented acyclic side chain, was isolated from the marine sponge Corticium sp. collected near Salary (south-west of Madagascar). The structure was elucidated by combined spectroscopic methods.