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, 10α,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. © 2001 Elsevier Science Ltd. All rights reserved.
Antialgal furano-diterpenes from Potamogeton natans L.
FIORENTINO, Antonio;ISIDORI, Marina;MONACO, Pietro;
2001
Abstract
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, 10α,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. © 2001 Elsevier Science Ltd. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
