Antialgal furano-diterpenes from Potamogeton natans L
2001
DellaGreca, M. | Fiorentino, A. | Isidori, M. | Monaco, P. | Temussi, F. | Zarrelli, A.
Six furano-ent-labdanes, 19-acetoxy-15,16-epoxy-8(17),13(16), 14-ent-labdatrien-20-al, 15,16-epoxy-12-oxo-8(17),13(16),14-ent-labdatrien-20, 19-olide, 12(S)-hydroxy-15,16-epoxy-8(17),13(16), 14-ent-labdatrien-20,19-olide, 10alpha,19-dihydroxy-15,16-epoxy-8(17), 13(16),14-nor-ent-labdatriene, 19,20-dihydroxy-15,16-epoxy-8(17),13(16), 14-ent-labdatriene, 15,16-epoxy-12-oxo-8(17),13(16), 14-ent-labdatrien-19,20-olide, were isolated, together with the known potamogetonin, from the aquatic plant Potamogeton natans. Their structures were determined on the basis of their chemical and spectral data. The compounds showed in vitro phytotoxicity against Raphidocelis subcapitata, a microalga used in aquatic tests.
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