Journal
MOLECULES
Volume 26, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/molecules26113286
Keywords
pyrimidine-5-carbonitriles; dihydrofolate reductase; crystal structure; DFT; Hirshfeld surface analysis
Funding
- Deanship of Scientific Research at Princess Nourah bint Abdulrahman University through the Fast-track Research Funding Program
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This report describes the structural characterization of three 2,4-disubstituted-dihydropyrimidine-5-carbonitrile derivatives, which crystallized in centrosymmetric space groups and adopted an L-shaped conformation. The crystal packing and inter-contacts of these compounds were analyzed based on energy frameworks, and a molecular docking simulation was conducted to evaluate their inhibitory potential against human dihydrofolate reductase (DHFR) enzyme.
In this report, we describe the structural characterization of three 2,4-disubstituted-dihydropyrimidine-5-carbonitrile derivatives, namely 2-{[(4-nitrophenyl)methyl]sulfanyl-1-6-oxo-4-propyl-1,6-dihydropyrimidine-5-carbonitrile 1, 4-(2-methylpropyl)-2-{[(4-nitrophenyl)methyl]sulfanyl}-6-oxo-1,6-dihydropyrimidine-5-calbonitrile 2, and 2-[(2-ethoxyethyl)sulfanyl]-6-oxo-4-phenyl-1,6-dihydropyrimidine-5-carbonitrile monohydrate 3. An X-ray diffraction analysis revealed that these compounds were crystallized in the centrosymmetric space groups and adopt an L-shaped conformation. One of the compounds (3) crystallized with a water molecule. A cyclic motif (R-2(2) (8)) mediated by N-H center dot center dot center dot O hydrogen bond was formed in compounds 1 and 2, whereas the corresponding motif was not favorable, due to the water molecule, in compound 3. The crystal packing of these compounds was analyzed based on energy frameworks performed at the B3LYP/6-31G(d,p) level of theory. Various inter-contacts were characterized using the Hirshfeld surface and its associated 2D-fingerprint plots. Furthermore, a molecular docking simulation was carried out to assess the inhibitory potential of the title compounds against the human dihydrofolate reductase (DHFR) enzyme.
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