Molecular Interaction of Riboflavin and Barbiturates

Riboflavin과 Barbiturate와의 분자간 상호작용

Spectroscopic investigation has been carried out to know the binding mechanism of riboflavin with barbiturates, such as phenobarbital and amobarbital in chloroform solution by using infrared and nuclear magnetic resonance spectra. Phenobarbital and isoalloxazine form a 1:1 cyclic hydrogen bonded dimer through the 3-N imino and the 2-C carbonyl groups of the isoalloxazine ring of the latter, and the 1-N (or 3-N) imino and the 2-C carbonyl groups of the pyrimidine ring of the former. Amobarbital and riboflavin form a 1:1 cyclic hydrogen bonded dimer by the same mode of phenobarbital.