Acetic Acid → [4-(3-Pyridylmethylamino)-2-(2-methylphenyl)benzoyl]methionine methyl ester

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Reaktionsgleichung

[CH3:1][O:2][C:3](=[O:26])[C@H:4]([CH2:22][CH2:23][S:24][CH3:25])[NH:5][C:6](=[O:21])[C:7]1[CH:12]=[CH:11][C:10]([NH2:13])=[CH:9][C:8]=1[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=1[CH3:20].[N:27]1[CH:32]=[CH:31][CH:30]=[C:29]([CH:33]=O)[CH:28]=1.C([BH3-])#N.[Na+].C(O)(=O)C>CO>[CH3:1][O:2][C:3](=[O:26])[C@H:4]([CH2:22][CH2:23][S:24][CH3:25])[NH:5][C:6](=[O:21])[C:7]1[CH:12]=[CH:11][C:10]([NH:13][CH2:33][C:29]2[CH:28]=[N:27][CH:32]=[CH:31][CH:30]=2)=[CH:9][C:8]=1[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=1[CH3:20]

Komponenten

Reaktionsbedingungen

Temperatur: 25 °C

Versuchsvorschrift

The aniline prepared in Example 308C (180 mg, 0.48 mmol) and 3-pyridine carboxaldehyde (55 mg, 0.51 mmol) were combined in methanol (4 mL) and sodium cyanoborohydride (48 mg, 0.77 mmol) was added followed by 100 mg of crushed molecular sieves. The reaction was adjusted to pH6 with acetic acid and stirred at 25° C. for 3 hours. The reaction was concentrated and transferred directly to a column of silica gel and purified by flash chromatography (5% methanol-ethyl acetate) to give the tide compound (182 mg, 82%) as an oil that solidified after standing. 1H NMR (300 MHz, CD3OD) δ 8.54 (d, J=2.4 Hz, 1H), 8.40 (dd, J=5.1, 1.3 Hz, 1H), 7.84 (bd, J=8.4 Hz, 1H), 7.65-7.55 (m, 1H), 7.40 (dd, J=7.8, 4.7 Hz, 1H), 7.30-7.10 (m, 4H), 6.66 (dd, J=8.8, 2.3 Hz, 1H), 6.37 (d, J=2.3 Hz, 1H), 4.45 (s, 2H), 3.64 (s, 3H), 2.10-1.98 (m, 8H), 1.90-1.78 (m, 1H), 1.65-1.55 (m, 1H). MS (CI) 464 (M+H)+. HRMS FAB Calcd m/z MH+ for C26H29O3N3S 464.2008, found 464.2023.

Aufarbeitung

concentrationThe reaction was concentrated
custompurified by flash chromatography (5% methanol-ethyl acetate)

Quellen und Nachweise

ORD-Eintrag: ord-50270b77adbb41ce88ad62d36f627cd6
Quelldatensatz: uspto-grants-2004_02
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US06693123B2

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