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Synthetic studies leading to DE-ring analogs of camptothecin
Authors:John F. Hansen  Kazuyuki Kamata  A. I. Meyers
Abstract:A synthetic scheme leading to an isomeric DE ring ( 14 ) of the anti-tumor alkaloid, camptothecin, has been achieved. However, the method failed to give the correct pyridone lactone ( 2 ) found in this alkaloid.
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