Characterisation of a Bacterial Galactokinase with High Activity and Broad Substrate Tolerance for Chemoenzymatic Synthesis of 6-Aminogalactose-1-Phosphate and Analogues
作者:Kun Huang、Fabio Parmeggiani、Edward Pallister、Chuen-Jiuan Huang、Fang-Fang Liu、Qian Li、William R. Birmingham、Peter Both、Baptiste Thomas、Li Liu、Josef Voglmeir、Sabine L. Flitsch
DOI:10.1002/cbic.201700477
日期:2018.2.16
Furnishing phosphates: A galactokinase from L. grimontii (LgGalK) has been identified and characterised; it shows broad substrate specificity towards different nucleotide phosphates and monosaccharides. This enzyme, in combination with a galactose oxidase variant was used in the chemoenzymatic synthesis of a panel of 6‐aminogalactose‐1‐phosphateanalogues.
Efficient chemoenzymatic synthesis of novel galacto-N-biose derivatives and their sialylated forms
作者:Lei Li、Yonghui Liu、Tiehai Li、Wenjun Wang、Zaikuan Yu、Cheng Ma、Jingyao Qu、Wei Zhao、Xi Chen、Peng G. Wang
DOI:10.1039/c5cc03746h
日期:——
Novel galacto-N-biose derivatives and their sialylated form were efficiently synthesizedviaone-pot two-enzyme systems starting with monosaccharides.
通过单糖开始,使用一锅两酶系统高效合成了新型半乳糖-N-生物素衍生物及其唾液酸化形式。
A chemoenzymatic synthesis of UDP-(2-deoxy-2-fluoro)galactose and evaluation of its interaction with galactosyltransferase
作者:Takashi Hayashi、Brion W Murray、Ruo Wang、Chi-Huey Wong
DOI:10.1016/s0968-0896(96)00263-5
日期:1997.3
Uridine 5'-diphospho-(2-deoxy-2-fluoro)galactose (UDP-2FGal), prepared and characterized for the first time by a chemoenzymatic method, was found to be a competitive inhibitor of beta-1,4-galactosyltransferase with a Ki value of 149 microM. This study supports that the glycosyltransferase reaction mechanism proceeds through a glycosidic cleavage transition state with sp2 character developed at the
Reactions of glycals with xenon fluoride: an improved synthesis of 2-deoxy-2-fluorosaccharides
作者:W. Korytnyk、S. Valentekovic-Horvat
DOI:10.1016/s0040-4039(00)92755-2
日期:1980.1
The 1,2-double bond in acetylated glycals has been fluorinated with XeF2 in the presence of BF3 to give 1,2-deoxy-1,2-difluorosaccharides. A mechanism for this reaction has been proposed. This method represents an improvement in the synthesis of 2-deoxy-2-fluorosaccharides.
A simple synthesis of 2-deoxy-2-fluoro-d-galactose using xenon difluoride
作者:Christoph C. Geilen、Nikolaus Loch、Werner Reutter、Konrad Seppelt、Franz Oberdorfer
DOI:10.1016/s0040-4039(00)92208-1
日期:1992.4
Treatment of tri-O-acetyl-D-galactal with xenondifluoride at −20 to +5 0C in CFCl3 afforded, after hydrolysis, 2-deoxy-2-fluoro-D-galactose in a smooth and stereoselective reaction. Preparative HPLC on a cation exchange resin delivered the white, crystalline product in yields of 63%.