Hydrochloric Acid → 2-[2-[(4aR,7aR)-2-Amino-7a-isothiazol-5-yl-4,4a,5,7-tetrahydropyrrolo[3,4-d][1,3]thiazin-6-yl]-5-fluoro-6-methyl-pyrimidin-4-yl]propan-2-ol hydrochloride

Temperature

70 °C

N-[(4aR,7aR)-6-[5-Fluoro-4-(1-hydroxy-1-methyl-ethyl)-6-methyl-pyrimidin-2-yl]-7a-isothiazol-5-yl-4,4a,5,7-tetrahydropyrrolo[3,4-d][1,3]thiazin-2-yl]benzamide (33 mg, 0.064 mmol) is dissolved in ethanol (2 mL). To this solution is added pyridine (0.052 mL, 0.6 mmol) and O-methylhydroxylamine hydrochloride (55 mg, 0.6 mmol). The reaction is warmed to 70° C. for 4 hours. The reaction is cooled to room temperature and stirred overnight (˜16 hrs). The mixture is concentrated to give the crude product which is purified via silica gel chromatography using a 0-10% (7 N NH3 in MeOH)/DCM to give the pure freebase. The freebase is dissolved in DCM (2 mL) and treated with 4 M HCl in dioxane (0.3 mL, 1.2 mmol). The mixture is concentrated to give the title compound as a white solid (18 mg, 0.04 mmol). ES/MS (m/z): 409(M+H). [α]D20=−6.0° (C=1.0, MeOH).

1. temperatureThe reaction is cooled to room temperature
2. concentrationThe mixture is concentrated
3. customto give the crude product which
4. customis purified via silica gel chromatography
5. customto give the pure freebase
6. concentrationThe mixture is concentrated

ORD record

ord-0eb807cbec8644ada4f92e45f7e28d7d

Source dataset

uspto-grants-2014_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08889856B2