Jansa, Petr published the artcileSynthesis and structure-activity relationship studies of polysubstituted pyrimidines as inhibitors of immune-activated nitric oxide production, Formula: C4H3Cl2N3, the publication is Medicinal Chemistry Research (2015), 24(5), 2154-2166, database is CAplus.
Based on the previous discovery of the inhibitory effect of the 5-substituted 2-amino-4,6-dichloropyrimidines on nitric oxide (NO) production in vitro, a series of novel pyrimidine derivatives, namely 4,6-dichloro-2-[(N,N-dimethylamino)methyleneamino]pyrimidines, 2,4-diamino-6-chloropyrimidines, and 2,4-diamino-6-(2-hydroxyethoxy)pyrimidines, were prepared bearing various substituents at the C-5 position on the pyrimidine, such as hydrogen, Me, Et, Pr, iso-Pr, propargyl, allyl, Bu, sec-Bu, Ph, benzyl, and fluorine. The intrinsic biol. potential of the prepared compounds was characterized by effects on the in vitro production of immune-activated NO in mouse peritoneal cells. All 5-substituted 4,6-dichloro-2-[(N,N-dimethylamino)methyleneamino]pyrimidines strongly inhibited NO production The IC50s were <5 μM in most cases. The highest inhibitory activity was observed for the 5-s-Bu analog (IC50 = 2.57 μM), the lowest one for 5-unsubstituted compound (IC50 = 11.49 μM). With the exception of the 5-fluoro-4,6-dichloro-2-[(N,N-dimethylamino)methyleneamino] derivative, all other compounds were devoid of cytotoxic effects. The hitherto obtained data suggest that the NO-inhibitory activity depends on the presence of the 2-amino-4,6-dichloropyrimidine scaffold.
Medicinal Chemistry Research published new progress about 56-05-3. 56-05-3 belongs to pyrimidines, auxiliary class Pyrimidine,Chloride,Amine,API, name is 2-Amino-4,6-dichloropyrimidine, and the molecular formula is C4H3Cl2N3, Formula: C4H3Cl2N3.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia