نتایج جستجو برای: 2 dioxo
تعداد نتایج: 2525681 فیلتر نتایج به سال:
A new series of 2-(3-oxo-3-phenylpropanoyl)-3-(substituted aryl)-1-thiazolidin-4-ones has been synthesized by cyclocondensation of ketoanils (the condensation products of 2, 4-dioxo-4phenyl butanal with primary amines) with mercaptoacetic acid. The chemical structures of the synthesized compounds were elucidated by elemental analysis, molecular weight determination, and UV, IR, 1H, 13C and DEPT...
The crystal structures of bis-[2-(pyridin-2-yl)phen-yl]rhodium(III) complexes with the metal in an octahedral coordination containing chloride and aceto-nitrile ligands, namely (OC-6-42)-aceto-nitrile-chlorido-bis-[2-(pyridin-2-yl)phenyl-κ(2) N,C (1)]rhodium(III), [RhCl(C11H8N)2(CH3CN)] (1), thyminate(1-) and methanol, namely (OC-6-42)-methanol(5-methyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-1-...
The title compound {systematic name: N-cyclo-hexyl-carba-moyl-4-[2-(7-meth-oxy-4,4-dimethyl-1,3-dioxo-1,2,3,4-tetra-hydro-isoquinolin-2-yl)eth-yl]benzene-sulfonamide}, C(27)H(33)N(3)O(6)S, displays an intra-molecular N-H⋯O=S inter-action, as well as inter-molecular N-H⋯O=C hydrogen bonds. The latter inter-actions lead to the formation of hydrogen-bonded chains parallel to the c axis. The confor...
Chemical investigation of the 50% ethanol eluate fraction from a macroporous resin of flowers of Datura metel L. collected in the Jiangsu Province of China resulted in the isolation of two new withanolides, baimantuoluoline G (1) and baimantuoluoside H (2). Their structures were elucidated as (12β,6β,22R)-1,10-seco-6,12,27-trihydroxy-26-oxo-witha-3,5,24-trienolide-1-oic acid-ε-lactone (1) and (...
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