New caulerpenyne-derived metabolites of an Elysia sacoglossan from the South Indian coast.
Chemical analysis of the secondary metabolite pattern of the sacoglossan mollusc Elysia cf. expansa, collected along South Indian coasts, showed the presence of the typical Caulerpa-derived sesquiterpene caulerpenyne (1) and two new minor co- occurring metabolites, the compounds dihydrocaulerpenyne (4) and expansinol (5). The chemical characterization of these molecules, structurally related to 1, is reported.
Phytochemical study of Caulerpa racemosa (Forsk.) J. Agarth, an invading alga in the habitat of La Maddalena Archipelago
Caulerpa racemosa is a marine Chlorophyta widely distributed in tropical areas, introduced into the Mediterranean Sea since 1990. It has been invading the Mediterranean Sea causing ecological problems. This invasive event can be considered as one of the most serious in the history of species introduced into the Mediterranean Sea, even if C. racemosa has not triggered as much attention as the famous ‘killer alga’ Caulerpa taxifolia. The aim of this work is to analyse phytochemically C. racemosa in the northern Sardinia area for secondary metabolites. Marine algae shows the molecular pattern of bis-indole alkaloids, sesquiterpenes, diterpenes and sterols. The intention is to expand phytochemical analysis in order to understand just how significant the anti-tumour, anti-inflammatory and antinociceptive actions can be.
Further confirmation of the presence of indolylacrylic acid in lentil seedlings and identification of hypaphorine as its precursor
Abstract The physiologically active indolylacrylic acid previously found in the lentil seedlings was further identified. Its natural formation in the same plant was demonstrated and the identification of its precursor was found to be hypaphorine, N -trimethyl- l (−)-tryptophan.