5-Alkylpyrrole-2-carboxaldehydes from the Caribbean sponges Mycale microsigmatosa and Desmapsamma anchorata - Compagnone, R S; Oliveri, M C; Piña, I C; Marques, S; Rangel, H R; Dagger, F; Suárez, A I; Gómez, M (Nat Prod Lett, 1999)