The title mol-ecule, C12H12N2OS, is planar, with an r.m.s. deviation of 0.04 Å. In the crystal, the N atom adjacent to the carbonyl group is sp (2)-hybridized. The crystal structure is stabilized by π-π stacking inter-actions observed between thio-phene and pyrimidinone rings of c-glide-related mol-ecules [centroid-centroid distance = 3.9554 (13) Å] and by C-H⋯π inter-actions, forming an infinite chain along the c-axis direction.
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http://dx.doi.org/10.1107/S1600536813017935 | DOI Listing |
IUCrdata
August 2023
Department of Chemistry and Physics, Southeast Missouri State University, Cape Girardeau, MO 63701, USA.
In the title com-pound (systematic name: 2,3-di-hydro-1,4-dithiino[2,3-]furan-5,7-dione), CHOS, the observed geometry agrees well with those of its phthalamide, thieno and hy-droxy analogs, and with a calculated geometry obtained by density functional theory (DFT) calculations. Specific structural features are an S-C-C-S torsion angle of -70.39 (17)° and S-C bonds to -hybridized C atoms approximately 0.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
May 2023
Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamilnadu, India.
In both of the title compounds, CHNOS, (), and CHNOS, (), the benzo-thio-phene rings are essentially planar with maximum deviations of 0.026 (1) and -0.016 (1) Å for the carbon and sulfur atoms in compounds () and (), respectively.
View Article and Find Full Text PDFBioorg Chem
October 2022
Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Electronic address:
In the development of novel anti-α-glucosidase agents, we synthesized novel thieno[2,3-b]quinoline-hydrazones 9a-n by facile and efficient conventional chemical reactions. These compounds were characterized by IR, H NMR, C NMR, and elemental analysis. Inhibitory activities of the title compounds were evaluated against yeast α-glucosidase.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
January 2022
Department of Chemistry, Faculty of Science, Taiz University, Taiz, Yemen.
The asymmetric unit of the title compound, CHNOS, comprises four mol-ecules. Their conformations differ primarily in the orientations of the styryl and the -phenyl-carboxamido groups. In the crystal, inter-molecular N-H⋯N, C-H⋯O and C-H⋯S hydrogen-bonding contacts as well a C-H⋯π(ring) inter-actions lead to the formation of a layer structure parallel to (010).
View Article and Find Full Text PDFEur J Med Chem
March 2021
School of Pharmacy, Anhui Medical University, Hefei, 230032, PR China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, PR China. Electronic address:
In order to discover and develop drug-like anti-inflammatory agents against arthritis, based on "Hit" we found earlier and to overcome drawbacks of toxicity, twelve series of total 89 novel pyrimidine, pyrazolo[4,3-d]pyrimidine and thieno[3,2-d]pyrimidine derivatives were designed, synthesized and screened for their anti-inflammatory activity against NO and toxicity for normal liver cells (LO2). Relationships of balance toxicity and activity have been summarized through multi-steps, and title compounds 22o, 22l were found to show lower toxicity (against LO2: IC = 2934, 2301 μM, respectively) and potent effect against NO release (IR = 98.3, 97.
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