@article{SommermannKimPetersetal.2004, author = {Sommermann, T. and Kim, Boo Geun and Peters, Karl and Peters, E. M. and Linker, Torsten}, title = {Short and stereoselective synthesis of C-glycosylated glycine derivatives from glycals by radical addition and reduction}, issn = {1359-7345}, year = {2004}, abstract = {Only three steps are required for the convenient synthesis of 2-C-branched glyco-amino acids from glycals with good yields and stereoselectivities}, language = {en} } @article{HartmannKimLinker2004, author = {Hartmann, K. and Kim, Boo Geun and Linker, Torsten}, title = {Manganese(III)-mediated radical reactions in carbohydrate chemistry : a new route to 3-deoxy-D-manno-oct-2- ulosonic acid (KDO)}, issn = {0936-5214}, year = {2004}, abstract = {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}, language = {en} } @article{PetersPetersKimetal.2005, author = {Peters, Karl and Peters, E. M. and Kim, Boo Geun and Linker, Torsten}, title = {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}, issn = {1433-7266}, year = {2005}, abstract = {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.}, language = {en} } @article{KimSchildeLinker2005, author = {Kim, Boo Geun and Schilde, Uwe and Linker, Torsten}, title = {New radical approaches to 3-deoxy-D-oct-2-ulosonic acids (KDO)}, issn = {0039-7881}, year = {2005}, abstract = {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}, language = {en} }