SUPPORTING INFORMATION FOR: Total synthesis of cephalosporolide E via a tandem radical/polar crossover reaction. The use of the radical cations under non-oxidative conditions in total synthesis Omar Cortezano-Arellano, Leticia Quintero and Fernando Sartillo-Piscil.a* a

Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP). 14 Sur Esq. San Claudio, Col. San Manuel. 72570, Puebla, México. [email protected]

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H and 13C Spectra of Compounds 5, 8, 4, 9, 11, 10, 12, 13, 14, 15, 16 31 P Spectra of Compound 16 1 H and 13C Spectra of (+) Cephalosporolide E

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