View Single Post
  #1  
Unread 11-25-2018, 06:02 AM
nmrlearner's Avatar
nmrlearner nmrlearner is offline
Senior Member
 
Join Date: Jan 2005
Posts: 23,137
Points: 193,617, Level: 100
Points: 193,617, Level: 100 Points: 193,617, Level: 100 Points: 193,617, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 50.7%
Activity: 50.7% Activity: 50.7% Activity: 50.7%
Last Achievements
Award-Showcase
NMR Credits: 0
NMR Points: 0
Downloads: 0
Uploads: 0
Default 3-O-Methyl- d -glucose mutarotation and proton exchange rates assessed by 13 C, 1 H NMR and by chemical exchange saturation transfer and spin lock measurements

3-O-Methyl- d -glucose mutarotation and proton exchange rates assessed by 13 C, 1 H NMR and by chemical exchange saturation transfer and spin lock measurements

Abstract

3-O-Methyl-d-glucose (3OMG) was recently suggested as an agent to image tumors using chemical exchange saturation transfer (CEST) MRI. To characterize the properties of 3OMG in solution, the anomeric equilibrium and the mutarotation rates of 3OMG were studied by 1H and 13C NMR. This information is essential in designing the in vivo CEST experiments. At room temperature, the ratio of α and β 3OMG anomers at equilibrium was 1:1.4, and the time to reach 95% equilibrium was 6Â*h. The chemical exchange rates between the hydroxyl protons of 3OMG and water, measured by CEST and spin lock at pH 6.14 and a temperature of 4Â*°C, were in the range of 360â??670Â*sâ??1.



Source: Journal of Biomolecular NMR
Reply With Quote


Did you find this post helpful? Yes | No