Journal
TETRAHEDRON LETTERS
Volume 47, Issue 48, Pages 8625-8628Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2006.08.113
Keywords
zygosporamide; marine-derived fungus; zygosporium masonii; cancer cell cytotoxicity; central nervous system cancer; renal cancer
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Zygosporamide (1), a new cyclic pentadepsipeptide, was isolated from the seawater-based fermentation broth of a marine-derived fungus identified as Zygosporium masonii. The structure of 1, which is composed of alpha-hydroxyleucic acid and both D-and L-amino acids, was determined by combined spectral and chemical methods. Despite a simple structure, zygosporamide illustrated significant cytotoxicity in the NCI's 60 cell line panel (median GI(50) = 9-1 mu M), with highly enhanced selectivity against the CNS cancer cell line SF-268 (GI(50) = 6.5 nM) and the renal cancer cell line RXF 393 (GI(50) <= 5.0 nM). (c) 2006 Elsevier Ltd. All rights reserved.
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