1H and 13C NMR spectra and solution structures of novel derivatives of 5-substituted creatinines
作者:Hanna Krawczyk、Agnieszka Pietras、Anna Kraska
DOI:10.1016/j.saa.2006.02.035
日期:2007.1
annular tautomerism of the investigated compounds. One can predict that 5-substituted creatinines, just like creatinine, appear in solution in the form of 2-amino-1,5-dihydro-1-methyl-4-imidazolone. Correlations between experimental and calculated substituent-induced chemicalshifts for two tautomeric forms of 5-substituted creatinines indicate that the mechanism of the substituent influence in both tautomers