Synthesis of Carbohydrate Mimics: α-1-C-Substituted-deoxymannojirimycins
作者:Carl R Johnson、Brian A Johns
DOI:10.1016/s0040-4039(97)10144-7
日期:1997.11
Methodology for the construction of diverse alpha-I-C-substituted-deoxymannojirimycin analogues is reported. The pseudoanomeric carbon-carbon bond was formed using a Suzuki cross-coupling between vinyl bromide 5, derived biocatalytically from bromobenzene, and an aryl, alkyl, or carbohydrate boron coupling partner. Ozonolysis and stereoselective reduction followed by an intramolecular nucleophilic ring closing served to form the polyhydroxylated piperidine ring. (C) 1997 Elsevier Science Ltd.
Synthesis and Biological Evaluation of Aza-<i>C</i>-disaccharides: (1→6), (1→4), and (1→1) Linked Sugar Mimics
作者:Brian A. Johns、Y. T. Pan、Alan D. Elbein、Carl R. Johnson
DOI:10.1021/ja9642929
日期:1997.5.1
The synthesis of (1→6), (1→4), and (1→1) linked aza-C-disaccharides, a novel class of glycomimetic compounds, is described. The polyhydroxylated piperidine ring was synthesized using vinyl bromide 11 as a common intermediate which was synthesized de novo from bromobenzene utilizing the microbial oxidation metabolite bromodiol 10. A Suzuki coupling of 11 with an alkylboron reagent derived from olefinated