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AssigneeEisai R&D Management Co., Ltd.
InventorsItaru Arimoto, Satoshi Nagato, Yukiko Sugaya, Yoshio Urawa, Koichi Ito, Hiroyuki Naka, Takao Omae, Akio Kayano, Katsutoshi Nishiura
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The present inventions provide a method for commercially producing a 1,2-dihydropyridine-2-one compound represented by the following formula (III-a) wherein the ring A represents an optionally substituted 2-pyridyl group, the ring B represents an optionally substituted phenyl group, and the ring C represents an optionally substituted phenyl group. Further, the invention provides crystals of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one and production processes therefore.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having a diffraction peak at a diffraction angle (2θ±0.2°) of 8.7° in a powder X-ray diffraction.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having a diffraction peak at a diffraction angle (2θ±0.2°) of 12.5° in a powder X-ray diffraction.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having diffraction peaks at diffraction angles (2θ±0.2°) of 8.7° and 12.5° in a powder X-ray diffraction.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having an absorption peak at a wavenumber of 1588±1 cm−1 in an infrared absorption spectrum (KBr method).
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having absorption peaks at wavenumbers of 1588±1 cm−1 and 751±1 cm−1 in an infrared absorption spectrum (KBr method).
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having peaks at chemical shifts of around 146.7 ppm and around 123.3 ppm in a 13C Solid State Nuclear Magnetic Resonance spectrum.
A process for producing a crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate, the process comprising the step of crystallizing 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one with an aid of one or two crystallization solvents selected from the group consisting of an alcoholic solvent, an alkylketone solvent, and water, wherein the 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate has (a) a diffraction peak at a diffraction angle (2θ±0.2°) of 8.7° in a powder X-ray diffraction, (b) a diffraction peak at a diffraction angle (2θ±0.2°) of 12.5° in a powder X-ray diffraction, (c) diffraction peaks at diffraction angles (2θ±0.2°) of 8.7° and 12.5° in a powder X-ray diffraction, (d) an absorption peak at a wavenumber of 1588±1 cm−1 in an infrared absorption spectrum (KBr method), (e) absorption peaks at wavenumbers of 1588±1 cm−1 and 751±1 cm−1 in an infrared absorption spectrum (KBr method) or, (f) peaks at chemical shifts of around 146.7 ppm and around 123.3 ppm in a 13C Solid State Nuclear Magnetic Resonance spectrum, (g) diffraction peaks at diffraction angles (20±0.2°) of 7.78°, 8.70° and 24.19° in a powder X-ray diffraction, (h) diffraction peaks at diffraction angles (2θ±0.2°) of 7.78°, 8.70°, 9.52°, 12.45° and 24.19° in a powder X-ray diffraction, (i) diffraction peaks at diffraction angles (2θ±0.2°) of 7.78°, 8.70°, 9.52°, 12.45°, 15.24°, 17.54°, 23.26°, 24.19°, 25.44° and 26.43° in a powder X-ray diffraction, (j) diffraction peaks at diffraction angles (2θ±0.2° of 7.78°, 8.70°, 9.52°, 12.45°, 14.59°, 15.24°, 15.60°, 16.18°, 17.54°, 19.98°, 21.04°, 21.42°, 23.26°, 24.19°, 25.44°, 25.82°, 26.43°, 27.31°, 27.86° and 28.87° in a powder X-ray diffraction, (k) absorption peaks at wavenumbers of 1661.37±1 cm−1, 1482.03±1 cm−1, 1282.43±1 cm−1, 899.63±1 cm−1 and 784.89±1 cm−1 in an infrared absorption spectrum (KBr method), (l) absorption peaks at wavenumbers of 3406.64±1 cm−1, 2217.74±1 cm−1, 1661.37±1 cm−1, 1619.91±1 cm−1, 1588.09±1 cm−1, 1566.88±1 cm−1, 1550.49±1 cm−1, 1482.03±1 cm−1, 1434.78±1 cm−1, 1369.21±1 cm−1, 1318.11±1 cm−1, 1282.43±1 cm−1, 1249.65±1 cm−1, 1157.08±1 cm−1, 1099.23±1 cm−1, 899.63±1 cm−1, 879.38±1 cm−1, 784.89±1 cm−1, 751.14±1 cm−1, 730.89±1 cm−1, 697.14±1 cm−1, 606.50±1 cm−1, 557.33±1 cm−1 and 505.26±1 cm−1 in an infrared absorption spectrum (KBr method), (m) peaks at chemical shifts of around 146.7 ppm, around 139.4 ppm, around 132.7 ppm, around 123.3 ppm, around 120.8 ppm and around 118.4 ppm in a 13C Solid State Nuclear Magnetic Resonance spectrum, (n) peaks at chemical shifts of around 159.8 ppm, around 150.8 ppm, around 146.7 ppm, around 139.4 ppm, around 136.6 ppm, around 134.9 ppm, around 132.7 ppm, around 129.0 ppm, around 127.8 ppm, around 126.5 ppm, around 125.8 ppm, around 123.3 ppm, around 120.8 ppm, around 118.4 ppm, around 114.6 ppm and around 108.8 ppm in a 13C Solid State Nuclear Magnetic Resonance spectrum, (o) a powder X-ray diffraction pattern shown in FIG. 4, (p) an infrared spectrum (KBr method) shown in FIG. 1 or (q) a 13C Solid State NMR spectrum shown in FIG. 8.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having diffraction peaks at diffraction angles (2θ±0.2°) of 7.78°, 8.70° and 24.19° in a powder X-ray diffraction.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having diffraction peaks at diffraction angles (2θ±0.2°) of 7.78°, 8.70°, 9.52°, 12.45° and 24.19° in a powder X-ray diffraction.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having diffraction peaks at diffraction angles (2θ±0.2°) of 7.78°, 8.70°, 9.52°, 12.45°, 15.24°, 17.54°, 23.26°, 24.19°, 25.44° and 26.43° in a powder X-ray diffraction.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having diffraction peaks at diffraction angles (2θ±0.2°) of 7.78°, 8.70°, 9.52°, 12.45°, 14.59°, 15.24°, 15.60°, 16.18°, 17.54°, 19.98°, 21.04°, 21.42°, 23.26°, 24.19°, 25.44°, 25.82°, 26.43°, 27.31°, 27.86° and 28.87° in a powder X-ray diffraction.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having absorption peaks at wavenumbers of 1661.37±1 cm−1, 1482.03±1 cm−1, 1282.43±1 cm−1, 899.63±1 cm−1 and 784.89±1 cm−1 in an infrared absorption spectrum (KBr method).
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having absorption peaks at wavenumbers of 3406.64±1 cm−1, 2217.74±1 cm−1, 1661.37±1 cm−1, 1619.91±1 cm−1, 1588.09±1 cm−1, 1566.88±1 cm−1, 1550.49±1 cm−1, 1482.03±1 cm−1, 1434.78±1 cm−1, 1369.21±1 cm−1, 1318.11±1 cm−1, 1282.43±1 cm−1, 1249.65±1 cm−1, 1157.08±1 cm−1, 1099.23±1 cm−1, 899.63±1 cm−1, 879.38±1 cm−1, 784.89±1 cm−1, 751.14±1 cm−1, 730.89±1 cm−1, 697.14±1 cm−1, 606.50±1 cm−1, 557.33±1 cm−1 and 505.26±1 cm−1 in an infrared absorption spectrum (KBr method).
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having peaks at chemical shifts of around 146.7 ppm, around 139.4 ppm, around 132.7 ppm, around 123.3 ppm, around 120.8 ppm and around 118.4 ppm in a 13C Solid State Nuclear Magnetic Resonance spectrum.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having peaks at chemical shifts of around 159.8 ppm, around 150.8 ppm, around 146.7 ppm, around 139.4 ppm, around 136.6 ppm, around 134.9 ppm, around 132.7 ppm, around 129.0 ppm, around 127.8 ppm, around 126.5 ppm, around 125.8 ppm, around 123.3 ppm, around 120.8 ppm, around 118.4 ppm, around 114.6 ppm and around 108.8 ppm in a 13C Solid State Nuclear Magnetic Resonance spectrum.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having a powder X-ray diffraction pattern shown in FIG. 4.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having an infrared spectrum (KBr method) shown in FIG. 1.
A crystal of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridin-2-one hydrate having a 13C Solid State NMR spectrum shown in FIG. 8.
Dependencies are inferred from the claim text.