Abstract
Crystalline hydrate of the title compound (5), C19H26N2O5·2(H2O), was structurally characterized by single crystal X-ray diffraction. It crystallizes in monoclinic system space group P 21/c with a = 7.3987(7) Å, b = 17.8691(16) Å, c = 17.0022(13) Å, β = 112.944(3)°, V = 2070.0(3) Å3, Z = 4, R 1 = 0.0592, wR 2 = 0.1016, and T = 298(2) K. The X-ray structure determination revealed that the center furanone ring is nearly coplanar with 3,4-dimethoxybenzene ring, making a dihedral angle of 0.860(69)°. Two kinds of centrosymmetric tetramers characterized by graph-set motifs of R 87 (36) and R 64 (32) are formed through O–H···O, O–H···N and C–H···O hydrogen bonding interactions, which generate a sheet of edge-fused rings parallel to the (011) plane. These sheets are further linked into a three dimensional network by C–H···π interactions. Nine 3-(3,4-dimethoxyphenyl)furan-2(5H)-ones were synthesized and fully characterized by elemental analysis, MS and 1H NMR. All of them were evaluated for antimicrobial activities against three Gram-positive organisms and a Gram-negative organism, and compound 5 was the most active against Staphylococcus aureus ATCC 25923.
Graphical Abstract
Two kinds of centrosymmetric tetramers characterized by graph-set motifs of R 87 (36) and R 64 (32) are formed through O–H···O, O–H···N and C–H···O hydrogen bonding interactions, which generate a sheet of edge-fused rings parallel to the (011) plane.
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Acknowledgments
The work was financed by the Planned Science and Technology Project of Hunan Province, China (grant No. 2011FJ3056), by Hunan Provincial Natural Science Foundation of China (grant No. 11JJ3113), by the Key Laboratory of Ecotourism’s Application Technology, Hunan Province (grant No. JDSTLY 01103), by a grant from National Natural Science Foundation (Youth Science Funds, No. 31100421) of China and by aid program for Science and Technology Innovative Research Team (Chemicals of Forestry Resources and Development of Forest Products) in Higher Educational Institutions of Hunan Province.
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Xiao, ZP., Yi, LC., Yi, TF. et al. Structure and Antibacterial Activity of 3-(3,4-Dimethoxyphenyl)furan-2(5H)-ones. J Chem Crystallogr 42, 323–329 (2012). https://doi.org/10.1007/s10870-011-0246-9
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DOI: https://doi.org/10.1007/s10870-011-0246-9