Journal
TETRAHEDRON LETTERS
Volume 55, Issue 44, Pages 6109-6112Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2014.09.047
Keywords
Coibamide A; Cyclodepsipeptide; Anticancer; N-Methylamino acid; Total synthesis
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Funding
- Ministry of Science and Technology of the People's Republic of China [2010CB833200, 2013AA092903]
- National Natural Science Foundation of China [21032002]
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Total synthesis of the originally proposed structure of coibamide A, a highly N- and O-methylated cytotoxic marine cyclodepsipeptide, has been accomplished by using a [(4+1)+3+3]-peptide fragment-coupling strategy and careful examination and optimization of the multiple dense N-methylated amide-bond formations. The synthetic sample of the proposed coibamide A could not match the natural product in both H-1 and C-13 NMR spectra, but was found to exhibit low micromolar cytotoxicity against the proliferation of three tested cancer cells. (C) 2014 Elsevier Ltd. All rights reserved.
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