Diisopropylethylamine → N-((1S,2R)-1-(3,5-Difluorobenzyl)-3-{[1-(3-ethynylphenyl)cyclopropyl]amino}-2-hydroxypropyl)-3-{[isopentyl(methyl)amino]methyl}-5-methylbenzamide Dihydrochloride

To methyl 3-{[isopentyl(methyl)amino]methyl}-5-methylbenzoate (250 mg, 0.95 mmol) in tetrahydrofuran/methanol/water (2:1:1, 8 mL) is added lithium hydroxide monohydrate (80 mg, 1.9 mmol), and the reaction is stirred at room temperature 16 h. The solution is concentrated under reduced pressure, redissolved in DMF (5 mL), and diisopropylethylamine (660 μL, 3.8 mmol), HATU (540 mg, 1.4 mmol), and (2R,3S)-3-amino-4-(3,5-difluorophenyl)-1-{[1-(3-ethynylphenyl)cyclopropyl]amino}-3-methylbutan-2-ol dihydrochloride (450 mg, 1.05 mmol) are added. The reaction stirred at room temperature 2 h. The reaction mixture is diluted with ethyl acetate, washed with water, saturated sodium bicarbonate, brine, dried (sodium sulfate), filtered, and concentrated under reduced pressure. Purification by flash column chromatography (silica, 9% methanol/methylene chloride) provides the title compound as the free base. The residue is dissolved in diethyl ether (3 mL) and 1N hydrochloric acid in diethyl ether (2 mL) is added. The mixture is concentrated under reduced pressure to yield the title compound. ESI MS m/z 588.3 [M+H]+.

1. concentrationThe solution is concentrated under reduced pressure
2. dissolutionredissolved in DMF (5 mL)
3. stirringThe reaction stirred at room temperature 2 h
4. washwashed with water, saturated sodium bicarbonate, brine
5. dry with materialdried (sodium sulfate)
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure
8. customPurification by flash column chromatography (silica, 9% methanol/methylene chloride)

ORDレコード

ord-c85bd6d8a1b44c43ad9fea4ae79fb9b2

出典データセット

uspto-grants-2007_02

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US07176242B2