A detailed exploration of crystal packing of two adamantane-isothiourea hybrid derivatives along with a known closely related structure has been performed to delineate the effect of halogen substituents and the role of weak intermolecular interactions in their supramolecular architectures. The adamantane-isothiourea hybrid derivatives used in the present study are (Z)-3-(Adamantan-1-yl)-S-(4-bromobenzyl)-1-phenylisothiourea (1), C 24 H 27 BrN 2 S and (Z)-3-(Adamantan-1-yl)-S-(4-bromobenzyl)-1-(3chlorophenyl)isothiourea (2), C 24 H 26 BrClN 2 S, characterized by X-ray crystallography. The X-ray structures revealed that the molecular conformation of 1 and 2 are different and stabilized by intramolecular C-HÁÁÁN interactions. In addition, a short intramolecular HÁÁÁH contact is formed in 2. The Hirshfeld surface analysis was used to delineate the nature of different intermolecular interactions and their contributions toward crystal packing. The quantitative analysis of strengths of molecular dimers existed in 1 and 2 has been performed using the PIXEL method. The electrostatic potential map clearly revealed nature and strength of r-holes at Br and Cl atoms. The topological analysis was used to characterize the nature and the strength of various intermolecular interactions including the type I BrÁÁÁBr contact. Interestingly, all the H-H bonding observed in 1 and 2 show closed-shell in nature. Further, an in-vitro antimicrobial activity studies suggest that the title compounds exhibited potent antibacterial activity against all the tested Gram-positive bacterial strains and Gram-negative Escherichia coli. Compound 2 showed marked anti-proliferative activity against MCF-7 and HeLa cell lines.
CCDC no.: 1482683The asymmetric unit of the title crystal structure is shown in the gure. Tables 1 and 2 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.
Cyclin-dependent kinases (CDKs) are promising targets in chemotherapy. In this study, we report a series of 2-anilinopyrimidine derivatives with CDK inhibitory activity. Twenty-one compounds were synthesized and their CDK inhibitory and cytotoxic activities were evaluated. The representative compounds demonstrate potent antiproliferative activities toward different solid cancer cell lines and provide a promising strategy for the treatment of malignant tumors. Compound 5f was the most potent CDK7 inhibitor (IC50 = 0.479 µM), compound 5d was the most potent CDK8 inhibitor (IC50 = 0.716 µM), and compound 5b was the most potent CDK9 inhibitor (IC50 = 0.059 µM). All the compounds satisfied the Lipinski’s rule of five (molecular weight < 500 Da, number of hydrogen bond acceptors <10, and octanol–water partition coefficient and hydrogen bond donor values below 5). Compound 5j is a good candidate for lead optimization because it has a non-hydrogen atom (N) of 23, an acceptable ligand efficiency value of 0.38673, and an acceptable ligand lipophilic efficiency value of 5.5526. The synthesized anilinopyrimidine derivatives have potential as anticancer agents.
C 24 H 27 ClN 2 S, triclinic P1 (no. 2), a = 7.1670(3) Å, b = 12.2734(6) Å, c = 13.1560(6) Å, α = 109.605(2)°, β = 96.515(2)°, γ = 97.312(2)°, V = 1066.08(8) Å 3 , Z = 2, The asymmetric unit of the title crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.
Source of materialBenzyl bromide (342 mg, 2.0 mmol) and anhydrous potassium carbonate (277 mg, 2.0 mmol) were added to a solution 1-(adamantan-1-yl)-3-(3-chlorophenyl)thiourea (642 mg, 2.0 mmol), in acetone (10 mL), and the mixture was heated under reflux for 3 h. The solvent was distilled off in vacuo, and the residue was washed with water, dried and recrystallized from ethanol to yield 625 mg (76%) of the title compound as transparent block crystals. M.P.: 367-369 K. Single crystals were obtained by slow evaporation of a EtOH/CHCl 3 (1:1) solution at room temperature.
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