The title compound, C29H42N4O5·0.5H2O, comprises four structural units. A flexible prop-yloxy unit in a gauche conformation, with a -C(H2)-C(H2)-C(H2)-O- torsion angle of -64.32 (18)°, connects an isoxazole ring and an approximately planar phenyl-oxa-diazole ring system [with a maxixmum devation of 0.061 (2) Å], which are oriented almost parallel to one another with a dihedral angle of 10.75 (7)°. Furthermore, a C11-alkyl chain with a terminal hy-droxy group links to the 3-position of the isoxazole ring via an amide bond. In the crystal, a half-occupancy solvent water mol-ecule connects to a neighbouring mol-ecule via an inter-molecular O-H⋯O(water) hydrogen bond to the C11-alkyl chain hy-droxy group.
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http://dx.doi.org/10.1107/S2056989015007367 | DOI Listing |
Eur J Med Chem
January 2025
Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Hubei Engineering Research Center for Advanced Fine Chemicals, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, 206 1st Rd Optics Valley, East Lake New Technology Development District, Wuhan, Hubei, 430205, China. Electronic address:
The growing prevalence of microbial infections, and antimicrobial resistance (AMR) stemming from the overuse and misuse of antibiotics, call for novel therapeutic agents, particularly ones targeting resistant microbial strains. Scientists are striving to develop innovative agents to tackle the rising microbial infections and abate the risk of AMR. Pyrazole, a five-membered heterocyclic compound belonging to the azole family, is a versatile scaffold and serves as a core structure in many drugs with antimicrobial and other therapeutic effects.
View Article and Find Full Text PDFPhys Chem Chem Phys
December 2024
Faculty of Science and Technology, Sophia University, Chiyoda, Tokyo 102-8554, Japan.
Nonadiabatic molecular dynamics simulations were performed to explore the photoisomerization pathway from isoxazole (iso-OXA) to oxazole (OXA), considering four electronic states. The XMS-CASPT2 and SA4-CASSCF theories were employed to describe these electronic structures, which were caused by 12 electrons in 11 orbitals with the cc-pVDZ + sp diffuse basis set; the Gaussian s- and p-type diffuse functions were extracted from Dunning's aug-cc-pVDZ function. The potential energy and its gradient at each time step were computed on-the-fly at these levels in the time evolution of the classical trajectory.
View Article and Find Full Text PDFRSC Adv
October 2024
School of Interdisciplinary Engineering and Sciences (SINES), National University of Sciences & Technology-NUST 44000 Islamabad Pakistan.
The current research work reports the synthesis of three 4-((3-arylthiazolo[3,4-]isoxazol-5-yl)amino)benzene sulfonamide derivatives with a thaizaole(3,4-)isoxazole-based fused ring heterocyclic system. The synthesized and characterized derivatives, namely, 4-(3-(2-hydroxy-3-methoxyphenyl)thiazolo[3,4-]soxazole-5-ylamino)benzenesulfonamide (YM-1), 4-(3-(4-chlorophenyl)isoxazolo[3,4-]thiazol-5-ylamino)benzenesulfonamide (YM-2), and 4-(3-(3-hydroxyphenyl)isoxazolo[3,4-]thiazol-5-ylamino)benzenesulfonamide (YM-3) were further explored for their binding interactions with DNA and enzymes (urease and carbonic anhydrase). Cytotoxicity of these derivatives for both healthy (HEK-293) and cancerous (MG-U87) cells was determined by MTT analysis.
View Article and Find Full Text PDFPharmaceuticals (Basel)
October 2024
Engineering Laboratory of Organometallic, Materials and Environment, Faculty of Sciences Dhar EL Mahraz, Sidi Mohamed Ben Abdellah University, P.O. Box 1796, Atlas, Fez 30000, Morocco.
: This research centers on the development and spectroscopic characterization of new quinazolin-4(3H)-one-isoxazole derivatives (). The aim was to investigate the regioselectivity of the 1,3-dipolar cycloaddition involving arylnitriloxides and N-propargylquinazolin-4(3H)-one, and to assess the antioxidant properties of the synthesized compounds. The synthetic approach started with the alkylation of quinazolin-4(3H)-one using propargyl bromide, followed by a 1,3-dipolar cycloaddition reaction.
View Article and Find Full Text PDFPhys Chem Chem Phys
November 2024
Department of Chemistry, University of Missouri, Columbia, Missouri 65211, USA.
The photodissociation of oxazole (c-CHNO) following excitation at 193 nm is studied using mm-Wave rotational spectroscopy in a uniform supersonic flow. Molecules entrained in the flow are excited to a ππ* state after which it is believed most relax back to the ground state ring opening at the O-C[N] bond with subsequent fragmentation. From the line intensities of the probed products, we obtained the branching fractions for seven different products which are the result of five different dissociation pathways.
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