An eco-friendly and water mediated product selective synthesis of 2-aminopyrimidines and their in vitro anti-bacterial evaluation

Antibacterial and anticancer activity of hydrothermally-synthesized zinc oxide nanomaterials using natural extracts of neem, pepper and turmeric as solvent media

A novel and simple wet chemical hydrothermal synthesis method was employed in the preparation of zinc oxide (ZnO) nanoparticles using neem (N), pepper (P) and turmeric (T) extracts as solvent media. The structural and optical properties as well as the antibacterial and anticancer properties of all the samples (ZnO, N/ZnO, P/ZnO, T/ZnO and NPT/ZnO) were characterized and analyzed. Solvent media was found to have an effect on both the size and the morphology of the nanoparticles, which in turn effected their optical and cytotoxic properties. The colony forming unit (CFU) assays were done for E. coli, S. aureus and S. typhi in which T/ZnO (∼2) and P/ZnO (∼3) showed a remarkable effect on S. aureus for 100 μg ml−1 and nearly zero for 150 μg/ml. The zone of inhibition (ZoI) was measured for S. agalactiae, S. dysgalactiae and S. pyogenes.The results showed that S. dysgalactiae is more sensitive to N/ZnO.Finally, the anticancer properties of these compounds towardsprostate cancer cells was investigated. Among the active compounds T ZnO showed the highest activity with low IC50 value (37.751 μg/ml) followed by P ZnO (45.68 μg ml−1).

2-Amino-4-(4-methoxyphenyl)-6-(4-methylphenyl)pyrimidin-1-ium chloride

In the title salt, C18H18N3O+·Cl−, the aminopyrimidine molecule is protonated at one of the pyrimidine N atoms. The chloride anion interacts with the protonated pyrimidine N—H group and one of the amino N—H groups through two N—H...Cl hydrogen bonds, forming a six-membered ring. The chloride anion interacts further with the other amino N—H group to form an additional N—H...Cl hydrogen bond, which links the molecules along [001] in a helical manner.

4-(3,5-Dimethoxyphenyl)-6-(2-methoxyphenyl)pyrimidin-2-amine

In the title molecule, C19H19N3O3, the 2-methoxyphenyl and 3,5-dimethoxyphenyl rings are attached at the 4- and 6-positions, respectively, of the central 2-aminopyrimidine ring. The dihedral angles between the planes of the benzene rings and that of the 2-aminopyrimidine ring are 17.31 (9) and 44.39 (6)°, respectively. In the crystal, pairs of N—H...N hydrogen bonds form inversion dimers enclosing R 2 2(8) rings. Pairs of N—H...O hydrogen bonds link the dimers into chains along [010].

Steroidal[17,16-d]pyrimidines derived from dehydroepiandrosterone: A convenient synthesis, antiproliferation activity, structure-activity relationships, and role of heterocyclic moiety

A series of steroidal[17,16-d]pyrimidines derived from dehydroepiandrosterone were designed and prepared by a convenient heterocyclization reaction. The in vitro anticancer activities for these obtained compounds were evaluated against human cancer cell lines (HepG2, Huh-7, and SGC-7901), which demonstrated that some of these heterocyclic pyrimidine derivatives exhibited significantly good cytotoxic activities against all tested cell lines compared with 5-fluorouracil (5-FU), especially, compound 3b exhibited high potential growth inhibitory activities against all tested cell lines with the IC₅₀ values of 5.41 ± 1.34, 5.65 ± 1.02 and 10.64 ± 1.49 μM, respectively, which might be used as promising lead scaffold for discovery of novel anticancer agents.