TY - JOUR A1 - Hartmann, K. A1 - Kim, Boo Geun A1 - Linker, Torsten T1 - Manganese(III)-mediated radical reactions in carbohydrate chemistry : a new route to 3-deoxy-D-manno-oct-2- ulosonic acid (KDO) N2 - An acyclic alkene derived from a carbohydrate is employed as a substrate for manganese-mediated radical reactions for the first time. The addition of malonate is interesting for the mechanism of such reactions, whereas acetic acid as radical precursor affords lactones in excellent yield. The main diastereomer was easily separated and represents a key intermediate in the synthesis of KDO Y1 - 2004 SN - 0936-5214 ER - TY - THES A1 - Kim, Boo Geun T1 - Radikalische Additionen an ungesättigte Kohlenhydrate als Schlüsselschritt in der Synthese von Kohlenhydrat-C-Analoga Y1 - 2006 CY - Potsdam ER - TY - JOUR A1 - Kim, Boo Geun A1 - Schilde, Uwe A1 - Linker, Torsten T1 - New radical approaches to 3-deoxy-D-oct-2-ulosonic acids (KDO) N2 - Two different approaches. with an unsaturated carbohydrate as a radical acceptor and a carbohydrate derived aldehyde as a radical precursor, led to key intermediates in the synthesis of 3-deoxy-D-oct-2-ulosonic acids (KDO). Manganese(III) acetate and cerium(IV) ammonium nitrate were the reagents of choice for the oxidative generation of radicals, whereas samarium(II) iodide was employed for reductive couplings. Both strategies were realized by using easily available starting materials, with acetic acid as C-2 and ethyl acrylate as C-3 building blocks, respectively Y1 - 2005 SN - 0039-7881 ER - TY - JOUR A1 - Peters, Karl A1 - Peters, E. M. A1 - Kim, Boo Geun A1 - Linker, Torsten T1 - Crystal structure of ethyl (3aR,4R,5R,6R,7aR)-4,5-diacetoxy-6-acetoxymethyl-2-oxy-3a,5,6,7a-tetrahy dro-4H- pyrano[3,2-d]isoxazole-3-carboxylate, C16H21NO11 N2 - C16H21NO11, monoclinic, P12(1)1 (no. 4), a = 8.181(1) angstrom, b = 11.604(2) angstrom, c = 10.193(1) angstrom, beta = 101.59(1)degrees, V = 947.9 angstrom(3), Z = 2, R-gt(F) = 0.068, wR(ref)(F-2) = 0.177, T = 293 K. Y1 - 2005 SN - 1433-7266 ER - TY - JOUR A1 - Sommermann, T. A1 - Kim, Boo Geun A1 - Peters, Karl A1 - Peters, E. M. A1 - Linker, Torsten T1 - Short and stereoselective synthesis of C-glycosylated glycine derivatives from glycals by radical addition and reduction N2 - Only three steps are required for the convenient synthesis of 2-C-branched glyco-amino acids from glycals with good yields and stereoselectivities Y1 - 2004 SN - 1359-7345 ER -