Acid-Catalyzed Solvolysis of CMP-<i>N</i>-Acetyl Neuraminate: Evidence for a Sialyl Cation with a Finite Lifetime
作者:Benjamin A. Horenstein、Michael Bruner
DOI:10.1021/ja961811z
日期:1996.1.1
An investigation of the mechanism of solvolysis of CMP-N-acetyl neuraminate (CMP-NeuAc) is presented that includes synthesis of a family of isotopically labeled CMP-NeuAc's, use of new methodology ...
Recombinant l-deoxy-D-xylulose 5-phosphate synthase of Bacillus subtilis was used for the preparation of isotope-labeled 1-deoxy-D-xylulose 5-phosphate using isotope-labeled glucose and/ or isotope-labeled pyruvate as starting materials. The simple one-pot methods described afford almost every conceivable isotopomer of l-deoxy-rt-xylulose 5-phosphate carrying C-13 Or C-14 from commercially available precursors with an overall yield around 50%.
Biosynthesis of Terpenoids: Efficient Multistep Biotransformation Procedures Affording Isotope-Labeled 2<i>C</i>-Methyl-<scp>d</scp>-erythritol 4-Phosphate Using Recombinant 2<i>C</i>-Methyl-<scp>d</scp>-erythritol 4-Phosphate Synthase
This paper describes the recombinant expression of the ispC gene of Escherichia coli specifying 2C-methyl-D-erythritol 4-phosphate synthase in a modified form that can be purified efficiently by metal-chelating chromatography. The enzyme was used for the preparation of isotope-labeled 2C-methyl-D-erythritol 4-phosphate employing isotope-labeled glucose and pyruvate as starting materials. The simple one-pot methods described afford numerous isotopomers of 2C-methyl-D-erythritol 4-phosphate carrying H-3, C-13, or C-14 from commercially available precursors. The overall yield based on the respective isotope-labeled starting material is approximately 50%.
Crout, David H. G.; Littlechild, Jennifer; Morrey, Stephen M., Journal of the Chemical Society. Perkin transactions I, 1986, p. 105 - 108
作者:Crout, David H. G.、Littlechild, Jennifer、Morrey, Stephen M.