melting point Article 5 proton nuclear magnetic resonance 4 unclassified drug 4 Fourier transform infrared spectroscopy 3 carbon nuclear magnetic resonance 3 chemistry 3 controlled study 3 drug synthesis 3 nonhuman 3 thin layer chromatography 3 Molecular Structure 2 article 2 chemical structure 2 enzyme inhibition assay 2 heteronuclear multiple bond correlation 2 isolation and purification 2 mass spectrometry 2 metabolism 2 molecular weight 2 serine 2 structure activity relation 2 1 (2,5 dihydroxyphenyl) 3 pyridine 2 yl propenone 1 2 bromo 6 ethenylphenol 1 2 hydroxy 5 iodobenzaldehyde 1 2 {2,3 dihydro 1,4 benzodioxin 6 yl[(4 methylphenyl) sulfonyl]amino} n (2 methoxyphenyl) acetamide 1 2 {2,3 dihydro 1,4 benzodioxin 6 yl[(4 methylphenyl) sulfonyl]amino} n (2 methylphenyl) acetamide 1 2 {2,3 dihydro 1,4 benzodioxin 6 yl[(4 methylphenyl) sulfonyl]amino} n (2,3 dimethylphenyl) acetamide 1 2 {2,3 dihydro 1,4 benzodioxin 6 yl[(4 methylphenyl) sulfonyl]amino} n (2,4 dimethylphenyl) acetamide 1 2 {2,3 dihydro 1,4 benzodioxin 6 yl[(4 methylphenyl) sulfonyl]amino} n (2,5 dimethylphenyl) acetamide 1