Effects of 3′-<i>C</i>-Methylation on the Hydrolytic Stability and Hydroxyl p<i>K</i><sub>a</sub>Values of Dinucleoside 2′,5′- and 3′,5′-Monophosphates
作者:Mikko Oivanen、Ekaterina V. Efimtseva、Sergey N. Mikhailov
DOI:10.1080/07328319808003471
日期:1998.8
The first-order rate constants for hydrolysis of 3'-C-methyluridylyl(2',5')- and -(3',5')adenosine and the corresponding native dinucleoside monophosphates (2',5'- and 3',5'-UpA) have been determined as a function of hydroxide-ion concentration (0.025 - 7 M) at 25 degrees C. In addition to the effects on the hydrolytic stability of the compounds, the effects of the 3'-C-methyl substitution on the kinetically determined pK(a) values for the sugar hydroxyls of the uridine moiety are discussed.