Fused pyrimidine cores are privileged kinase scaffolds, yet few examples of the 2-amino-pyrido[3,4-d]pyrimidine chemotype have been disclosed in the context of kinase inhibitor programs. Furthermore, no general synthetic route has been reported to access 2-amino-pyrido[3,4-d]pyrimidine derivatives. Here we report a versatile and efficient chemical approach to this class of molecules. Our strate...

The title compound, C(32)H(28)N(6)O(4)·2C(2)H(5)OH, consists of two 2-(propyl-amino)-benzofuro[3,2-d]pyrimidin-4(3H)-one units connected, via one of the pyrimidine N atoms, to a bridging benzene ring in the 1,4 positions. Two ethanol solvent mol-ecules are also present. The main mol-ecule lies on a center of symmetry located at the center of the benzene ring. The fused-ring system of the benzof...

Novel routes for the preparation of 2-amino-4H-pyran-3-carbonitrile 9, amino-arylbenzoic acid ester derivatives 13a,b, 2-aminotetrahydro-4H-chromene-3-carbonitrile 18, 3-amino-4-cyanotetrahydronaphthalene-2-carboxylic acid ester 26 and 4-amino-3,5-dicyanophthalic acid ester derivatives 37a-c were developed. The synthetic methods utilize one-pot reactions of acetylene carboxylic acid esters, α,β...

Abstract: Background: Free radicals and ROS which are formed in normal physiological conditions, damages the cells if it is not eliminated by endogenous system causes oxidative stress. Pyridopyrimidines important molecule heterocyclic chemistry, gaining interest because of their biological pharmacological activities, especially for potential anti-tumor, antibacterial tyrosine kinase inhibitors,...

Two new complexes, [Cu(dimpyr)2(H2O)2](NO3)2.2H2O (1) and (Hamdimpy)2[CoCl4].H2O (2), with the monodentate ligand 2-amino-6-methylpyrimidin-4-(1H)-one (dimpyr) countercation 4-amino-2,6-dimetylpyrimidium (Hamdimpy), respectively, were prepared characterized by single crystal X-ray diffraction, elemental analysis IR spectroscopy. In (1), Cu(II) cation is tetracoordinated, in a square plan fashio...

In the presence of nitrobenzylthioinosine (NBMPR) a potent inhibitor of nucleoside transport, Roswell Park Memorial Institute 6410 cells proliferating in culture were protected from otherwise inhibitory concentrations of 9-beta-D-ribofuranosylpurine (nebularine); cellular uptake of nebularine was greatly reduced under these circumstances. Initial rates of nebularine uptake by Roswell Park Memor...

A copper(II) complex of the non-symmetric bidentate ligand 2-{[6-(di-methyl-amino)-pyrimidin-4-yl]sulfan-yl}pyrimidine-4,6-di-amine (L1) is reported. The single-crystal X-ray structure of aqua-[aqua/chlorido-(0.49/0.51)](2-{[6-(di-methyl-amino)-pyrimidin-4-yl]sulfan-yl}pyrimidine-4,6-di-amine)-copper(II) 0.49-chloride 1.51-hydrate, [CuCl1.51(C10H13N7S)(H2O)1.49]Cl0.49·1.51H2O or [(L1)Cl1.51(H2O...

In the title compound, C(6)H(10)N(3) (+)·C(7)H(3)N(2)O(6) (-)·2H(2)O, the amino-pyrimidine mol-ecule is protonated at one of the pyrimidine N atoms. The carboxyl-ate group of the 3,5-dinitro-benzoate anion inter-acts with the protonated pyrimidine N atom and the 2-amino group through a pair of N-H⋯O hydrogen bonds, forming an R(2) (2)(8) motif. Two inversion-related pyrimidine rings are linked ...

A simple, novel, efficient and three-component procedure for the synthesis of pyrimido[4,5-d]pyrimidine-2,4-dione derivatives by the reaction of 6-amino-1,3-dimethyluracil, aldehyde and 2-benzylisothiourea hydrochloride promoted by ionic liquid 1-butyl-3-methylimidazolium bromide ([BMIm]Br) under solvent-free conditions is reported. The presented method is benefited from operational simplicity...