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Nucl Med Biol. 2010 Oct;37(7):763-75. doi: 10.1016/j.nucmedbio.2010.04.186.

The first design and synthesis of [11C]MKC-1 ([11C]Ro 31-7453), a new potential PET cancer imaging agent.

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  • 1Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN 46202, USA.


Bisindolylmaleimide MKC-1 (formerly known as Ro 31-7453) is a novel, orally active, small-molecule, cell cycle inhibitor with broad-spectrum antitumor effects. [(11)C]MKC-1 ([(11)C]Ro 31-7453) was first designed and synthesized as a new potential positron emission tomography cancer imaging agent through two different strategies. The first strategy was to prepare a carbon-11-labeled bisindolyl maleic anhydride intermediate followed by the conversion to maleimide. The second strategy involved the condensation of either carbon-11-labeled indole-3-acetamides with indole-3-glyoxalates, or indole-3-acetamides with carbon-11-labeled indole-3-glyoxalates. The radiochemical yields were 15-30%, decay corrected to end of bombardment (EOB), based on [(11)C]CO(2). The specific activity was 222-296 GBq/μmol at EOB and 111-148 GBq/μmol at the end of synthesis, respectively.

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