Total synthesis of the protein phosphatase inhibitor okadaic acid

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Steven V. Ley, Alexander C. Humphries, Holger Eick, Robert Downham, Andrew R. Ross, Richard J. Boyce, John B. J. Pavey and Jörg Pietruszka


Abstract

The total synthesis of the protein phosphatase inhibitor okadaic acid 1 is reported using a convergent coupling strategy of three components, all of which may be prepared using chemistry developed in our laboratories.


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  30. Authentic okadaic acid was kindly provided by Professor K. Yamada and Professor D. Uemura. Comparison between the synthetic and authentic compounds was made by superposition of the corresponding 600 MHz 1H NMR spectra, co-elution by thin layer chromatography and electrospray accurate mass spectrometry.