New pyridinium alkaloids from a marine sponge of the genus Spongia with a human phospholipase A2 inhibitor profile

1. De Marino, S.
2. Iorizzi, M.
3. Zollo, F.
4. Debitus, C.
5. Menou, J.-L.
6. Ospina, L.F.
7. Alcaraz, M.J.
8. Payá, M.