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"Mechanism of UV-Induced Formation of Dewar Lesions in DNA" Karin Haiser, Benjamin P. Fingerhut, Korbinian Heil, Andreas Glas, Teja T. Herzog, Bert M. Pilles, Wolfgang J. Schreier, Wolfgang Zinth,* Regina de Vivie-Riedle,* and Thomas CarellAngew. Chem. Int. Ed. 51, 2, 408 - 411 (2012) Abstract: The importance of a backbone: The mechanism of formation of Dewar lesions (see scheme) has been investigated by using femtosecond IR spectroscopy and ab initio calculations of the exited state. The 4π electrocyclization is rather slow, occurs with an unusual high quantum yield, and—surprisingly—is controlled by the phosphate backbone. BMO authors (in alphabetic order): Karin Haiser Teja Herzog Bert Manuel Pilles Wolfgang Schreier Wolfgang Zinth  WWW-Version |