Abstract
A concise formal synthesis of camptothecin is described. The key pyrido-lactone (DE ring) was prepared effectively starting from 2-chloronicotinic acid via lithiation, reduction, and hydrolysis in 29% overall yield.
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Acknowledgments
We gratefully acknowledge financial support from the Program for New Century Excellent Talents in University (NCET) and National Natural Science Foundation of China. We also thank the Laboratory of Organic Functional Molecules, Sino-French Institute of ECNU for support.
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Yu, S., Luo, Y., Liu, H. et al. Synthesis of the DE synthon of racemic camptothecin. Monatsh Chem 141, 245–249 (2010). https://doi.org/10.1007/s00706-009-0245-0
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DOI: https://doi.org/10.1007/s00706-009-0245-0