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An 15n-nmr study of isomeric n1 and n3 substituted 7-methyl-10-oxo-9,10-dihydro pyrimido[l,2-a]purines and 9-oxo-8,9-dihydro-5-alkyl-imidazo[1,2-a] purines in neutral and acidic medium.

Medicinal ChemistryBioorganic ChemistryAcidic MediumBiochemistryNatural SciencesOrganic ChemistryIsomeric N115N-nmr StudyPharmacology