Hydrochloric Acid → (R)-1-(1-(2-Hydroxy-3-(pyrrolidin-1-yl)propyl)-1H-indazol-5-yl)-4-(4-(trifluoromethyl)phenyl)pyridin-2(1H)-one hydrochloride

温度

45 °C

To (S)-1-(1-(oxiran-2-ylmethyl)-1H-indazol-5-yl)-4-(4-(trifluoromethyl)phenyl)-pyridin-2(1H)-one (200 mg, 0.48 mmol) in tetrahydrofuran (5 mL) was added LiClO4 (775 mg, 7.28 mmol) followed by pyrrolidine (0.41 mL, 4.9 mmol). The reaction mixture was heated in a 45° C. oil bath for 4.5 h. The reaction mixture was cooled to ambient temperature, diluted with dichloromethane (50 ml), washed with water (25 mL) and brine (25 mL), dried (Na2SO4), and concentrated under reduced pressure. The material was purified by column chromatography (silica gel, 9:1 CH2Cl2/MeOH to 90:9:1 CH2Cl2/MeOH/conc. NH4OH). The dried residue (197 mg, 0.41 mmol) was dissolved in dichloromethane (10 mL) and HCl (1.25 M solution in methanol, 0.36 mL, 0.45 mmol) was added. The mixture was concentrated under reduced pressure and dried to afford the title compound (194 mg, 78%) as a yellow solid: mp 116-119° C.; 1H NMR (500 MHz, DMSO-d6) δ 9.65 (br s, 1H), 8.21 (s, 1H), 8.02-8.00 (m, 2H), 7.89-7.82 (m, 5H), 7.47 (dd, J=9.0, 2.0 Hz, 1H), 6.89 (d, J=2.0 Hz, 1H), 6.74 (dd, J=7.0, 2.0 Hz, 1H), 5.75 (br s, 1H), 4.57-4.47 (m, 2H), 4.33 (br s, 1H), 3.56-2.90 (br m, 6H), 1.89 (br s, 4H); ESI MS m/z 483 [M+H]+; HPLC (Method B)>99% (AUC), tR=14.5 min; [α]23D +10.8° (c 0.11, Methanol).

1. temperatureThe reaction mixture was cooled to ambient temperature
2. washwashed with water (25 mL) and brine (25 mL)
3. dry with materialdried (Na2SO4)
4. concentrationconcentrated under reduced pressure
5. customThe material was purified by column chromatography (silica gel, 9:1 CH2Cl2/MeOH to 90:9:1 CH2Cl2/MeOH/conc. NH4OH)
6. concentrationThe mixture was concentrated under reduced pressure
7. customdried

ORDレコード

ord-a44e21d6ee5d4f9da6790b44b3ef8890

出典データセット

uspto-grants-2012_09

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08273770B2