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The structure of the anti-aging agent J147 used for treating Alzheimer's disease.
The molecular structure of the anti-aging agent J147 [systematic name: (E)-N-(2,4-dimethylphenyl)-2,2,2-trifluoro-N'-(3-methoxybenzylidene)acetohydrazide], C18 H17 F3 N2 O2 , has been determined at 150 K. The crystal structure corresponds to the minimum-energy conformation in the gas phase calculated by density functional theory (DFT). 15 other conformations have been calculated and compared with the minimum, denoted 1111. NMR spectroscopic data have been obtained and compared with those from Gauge Independent Atomic Orbital (GIAO) calculations. DFT calculations allow the reduction of the 16 possible rotamers to the four most stable (i.e. 1111, 1112, 1121 and 1222); in addition, the calculated barriers connecting these minima are low enough to permit their interconversion. Comparison of the NMR spectroscopic results, both experimental and calculated, point to the 1121 isomer being present in chloroform solution.
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