Purealidin A, a new cytotoxic bromotyrosine-derived alkaloid from the Okinawan marine spongePsammaplysilla purea

Purealidin A, a new cytotoxic bromotyrosine-derived alkaloid from the Okinawan marine spongePsammaplysilla purea Purealidins B and C, new bromotyrosine alkaloids from the okinawan marine sponge psammaplysilla purea Purealidins E-G, New Bromotyrosine Alkaloids from the Okinawan Marine Sponge Psammaplysilla purea Purealidins J-R, New Bromotyrosine Alkaloids from the Okinawan Marine Sponge Psammaplysilla purea. Purealidins E-G, New Bromotyrosine Alkaloids from the Okinawan Marine Sponge Psammaplysilla purea Purealidin D, a new pyridine alkaloid from the okinawan marine sponge psammaplysilla purea Purealidins J-R, New Bromotyrosine Alkaloids from the Okinawan Marine Sponge Psammaplysilla purea. Lipopurealins D and E and Purealidin H, New Bromotyrosine Alkaloids from the Okinawan Marine Sponge Psammaplysilla purea Lipopurealins D and E and Purealidin H, New Bromotyrosine Alkaloids from the Okinawan Marine Sponge Psammaplysilla purea Purealidin S and Purpuramine J, Bromotyrosine Alkaloids from the Fijian Marine Sponge <i>Druinella </i>sp.