Psammaplysin H, a new antimalarial bromotyrosine alkaloid from a marine sponge of the genus Pseudoceratina
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Andrews, Kathy T
Birrell, Geoff W
Tran, Truc Linh
Camp, David
Davis, Rohan A
Quinn, Ronald J
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Abstract
Mass-directed isolation of the CH(2)Cl(2)/CH(3)OH extract from a marine sponge of the genus Pseudoceratina resulted in the purification of a new antimalarial bromotyrosine alkaloid, psammaplysin H (1), along with the previously isolated analogs psammaplysins G (2) and F (3). The structure of 1 was elucidated following 1D and 2D NMR, and MS data analysis. All compounds were tested in vitro against the 3D7 line of Plasmodium falciparum and mammalian cell lines (HEK293 and HepG2), with 1 having the most potent (IC(50) 0.41muM) and selective (>97-fold) antimalarial activity.
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Bioorganic & Medicinal Chemistry Letters
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21
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2
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© 2010 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
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Medicinal and biomolecular chemistry
Medicinal and biomolecular chemistry not elsewhere classified
Organic chemistry
Pharmacology and pharmaceutical sciences