Tyrosine−Lipid Peroxide Adducts from Radical Termination: Para Coupling and Intramolecular Diels−Alder Cyclization
作者:Roman Shchepin、Matias N. Möller、Hye-young H. Kim、Duane M. Hatch、Silvina Bartesaghi、Balaraman Kalyanaraman、Rafael Radi、Ned A. Porter
DOI:10.1021/ja106503a
日期:2010.12.15
intramolecular Diels-Alder (IMDA) cyclization, affording a number of diastereomeric tricyclic adducts that have characteristic carbonyl (13)C chemical shifts at ~198 ppm. All of the NMR HMBC and HSQC correlations support the structure assignments of the primary and Diels-Alder adducts, as does MS collision-induced dissociation data. Kinetic rate constants and activation parameters for the IMDA reaction were