A new class of pyridopyrimidinone compounds containing different nitrogenous heterocycles were synthesized starting from the key precursor 2-hydrazinyl-5-phenyl-7-(pyridin-3-yl)pyrido[2,3-d]pyrimidin-4(3H)-one via condensation with series of aromatic ...
Nagy M. Khalifa +3 more
doaj +1 more source
Synthesis and pharmacological profiling of analogues of benzyl quinolone carboxylic acid (BQCA) as allosteric modulators of the M1 muscarinic receptor [PDF]
Established therapy in Alzheimer’s disease involves potentiation of the endogenous orthosteric ligand, acetylcholine, at the M1 muscarinic receptors found in higher concentrations in the cortex and hippocampus.
Arthur Christopoulos +43 more
core +2 more sources
Diethyl 2-(3,4-dicyanophenyl)-2-[(2-naphthyl)methyl]malonate
The asymmetric unit of the title compound, C26H22N2O4, contains two crystallographically independent molecules. The crystal structure is stabilized by intra- and intermolecular C—H⋯O interactions.
Sener, MK +4 more
openaire +3 more sources
Diethyl 2-[(5-methoxy-2-methyl-1-phenylsulfonyl-1H-indol-3-yl)methylene]malonate
In the title compound, C24H25NO7S, the sulfonyl-bound phenyl ring is approximately perpendicular to the indole ring system [dihedral angle = 87.72 (5)°].
T. Kavitha +4 more
doaj +1 more source
Lactone Carboxylic Acids. III. Reaction of Ethyl β-Alkylglycidates with Ethyl Malonate [PDF]
The ring opening of epoxide group in the reaction of ethyl ,β-alkylglycidates with sodiomalonate was observed mostly at the α-position of the glycidates.
Kariya, Yosihiro +2 more
core +1 more source
A new purple sulfur bacterium from saline littoral sediments, Thiorhodotvibrio winogradskyi gen. nov. and sp. nov. [PDF]
Two strains of a new purple sulfur bacterium were isolated in pure culture from the littoral sediment of a saline lake (Mahoney Lake, Canada) and a marine microbial mat from the North Sea island of Mellum, respectively.
BB Jørgensen +25 more
core +1 more source
Synthesis of carbon-13-labeled tetradecanoic acids.
The synthesis of tetradecanoic acid enriched with 13C at carbons 1, 3, or 6 is described. The label at the carbonyl carbon was introduced by treating 1-bromotridecane with K13CN (90% enriched) to form the 13C-labeled nitrile, which upon hydrolysis ...
J T Sparrow, K M Patel, J D Morrisett
doaj +1 more source
Ring transformations in reactions of pyrimidine and N-alkylpyrimidinium salts with nucleophile [PDF]
Paper IOn treatment with liquid ammonia at -33°C, the quaternary pyrimidinium salts, i.e. 1-methylpyrimidinium methyl sulfate, 1,2-dimethylpyrimidinium iodide, 1,4,6-trimethyl-pyrimidinium iodide and 1,2,4,6-tetramethylpyrimidinium iodide demethylate ...
Oostveen, E.A.
core +1 more source
The Reactions of Ester with Acyl Chloride in the Presence of Aluminum Chloride. V. Reaction Mechanism of the Benzoylation of Diethyl Malonate [PDF]
Hiroo Kaneyuki
openalex +1 more source
A series of 6,8-diiodocoumarin-3-N-carboxamides (4–11) were prepared. Treatment of ethyl 6,8-diiodocoumarin-3-carboxylate (1) with ethyl cyanoacetate/NH4OAc gave ethyl 2-(3-carbamoyl-6,8-diiodocoumarin-4-yl)-2-cyanoacetate (12) and 2-amino-4-hydroxy-7,9 ...
Hany M. Mohamed +6 more
doaj +1 more source

