@article{VidadalaPimpalpalleLinkeretal.2011, author = {Vidadala, Srinivasa Rao and Pimpalpalle, Tukaram M. and Linker, Torsten and Hotha, Srinivas}, title = {Gold-Catalyzed reactions of 2-C-Branched carbohydrates mild glycosidations and selective anomerizations}, series = {European journal of organic chemistry}, journal = {European journal of organic chemistry}, number = {13}, publisher = {Wiley-Blackwell}, address = {Malden}, issn = {1434-193X}, doi = {10.1002/ejoc.201100134}, pages = {2426 -- 2430}, year = {2011}, abstract = {2-C-branched methyl glycosides react with various alcohols under gold catalysis to transglycosylated products. The method is applicable for the convenient synthesis of disaccharides. Without nucleophile a selective anomerization occurs, giving first access to alpha-configured 2-C-nitromethyl glycosides. The results are interesting for the mechanism of gold-catalyzed glycosidations.}, language = {en} } @article{PimpalpalleVidadalaHothaetal.2011, author = {Pimpalpalle, Tukaram M. and Vidadala, Srinivasa Rao and Hotha, Srinivas and Linker, Torsten}, title = {Lewis acid-catalyzed stereoselective lactonization and subsequent glycosidation of 2-C-malonyl carbohydrates}, series = {Chemical communications}, volume = {47}, journal = {Chemical communications}, number = {37}, publisher = {Royal Society of Chemistry}, address = {Cambridge}, issn = {1359-7345}, doi = {10.1039/c1cc13425f}, pages = {10434 -- 10436}, year = {2011}, abstract = {Gold(III) bromide is a suitable catalyst for the stereoselective cyclization of 2-C-malonyl carbohydrates to the anomeric center under retention of one ester group. Reopening of the lactones with alcohols in the presence of TMSOTf affords allyl, propargyl and benzyl glycosides with high alpha-selectivity.}, language = {en} }