114149-93-8Relevant academic research and scientific papers
Differentiation of regioisomers at 15N natural abundance using gradient-enhanced 1H/15N HMBC NMR spectroscopy
McDonnell, Patricia A.,Gauthier, A. Diane,Ferro, Michael P.
, p. 35 - 38 (2007/10/03)
The 1H/15N HMBC experiment at 15N natural abundance using pulsed field gradients is a useful tool for chemical shift assignment and structure elucidation. This experiment assisted in the identification of regioisomers that could not be distinguished with conventional 1H/1H nuclear Overhauser or 1H/13C correlation NMR experiments. The natural abundance 15N gradient-enhanced HMBC experiment was easily implemented, provided high-quality spectra and readily distinguished nitrogen-containing regioisomers. This experiment can aid in structure elucidation when traditional 1H and 13C experiments fail to provide unique structural assignment.
The Synthesis of 3-[3-(4-chlorophenyl)-1-(4-methoxyphenyl) -5-pyrazolyl]-N-hydroxy-N-methylpropanamide a regioisomer of tepoxalin
Murray, William V.
, p. 1863 - 1866 (2007/10/02)
Compound 2 was synthesized in 4 steps in 65% overall yield. Mechanistic studies of the key pyrazole forming step revealed a tetrahyrofuran intermed.
1,5-Diaryl-3-substituted pyrazoles pharmaceutical compositions and use
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, (2008/06/13)
1,5-Diaryl-3-substituted pyrazoles, a method of their preparation, compositions containing the same and methods of their use are disclosed. The pyrazoles are useful in alleviating inflammatory and cardiovascular disorders in mammals.
