Triethylamine → (+/-)-3-{4-[(3,3-Di methyl-cyclobutyl)-(3-methyl-quinolin-2-ylamino)-methyl]-benzoylamino}-propionic acid ethyl ester

HRID 1424258Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1424258
[CH3:1][C:2]1([CH3:28])[CH2:5][CH:4]([CH:6]([NH:16][C:17]2[C:26]([CH3:27])=[CH:25][C:24]3[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=3)[N:18]=2)[C:7]2[CH:15]=[CH:14][C:10]([C:11](O)=[O:12])=[CH:9][CH:8]=2)[CH2:3]1.Cl.[CH2:30]([O:32][C:33](=[O:37])[CH2:34][CH2:35][NH2:36])[CH3:31].C(N(CC)CC)C>ClCCl>[CH2:30]([O:32][C:33](=[O:37])[CH2:34][CH2:35][NH:36][C:11](=[O:12])[C:10]1[CH:14]=[CH:15][C:7]([CH:6]([CH:4]2[CH2:3][C:2]([CH3:1])([CH3:28])[CH2:5]2)[NH:16][C:17]2[C:26]([CH3:27])=[CH:25][C:24]3[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=3)[N:18]=2)=[CH:8][CH:9]=1)[CH3:31]

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 458475beta-Alanine, ethyl ester, hydrochlorideHCID 71243837(+/-)-4-[(3,3-Dimethyl-cyclobutyl)-(3-methyl-quinolin-2-ylamino)-methyl]-benzoic acid2×

Produkt 1

HCID 71239546(+/-)-3-{4-[(3,3-Di methyl-cyclobutyl)-(3-methyl-quinolin-2-ylamino)-methyl]-benzoylamino}-propionic acid ethyl esterAusbeute 80,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

(+/−)-4-[(3,3-dimethyl-cyclobutyl)-(3-methyl-quinolin-2-ylamino)-methyl]-benzoic acid (Intermediate 26) (37 mg, 0.099 mmol) was combined with 1-hydrobenzotriazole hydrate (23.0 mg, 0.149 mmol), N-(3-dimethylaminopropyl)-W-ethylcarbodiimide hydrochloride (29.0 mg, 0.149 mmol), and beta-alanine ethyl ester hydrochloride (18.0 mg, 0.119 mmol). Anhydrous dichloromethane (5 mL) was added followed by triethylamine (0.027 mL, 0.198 mmol). The solution was stirred at room temperature for 3 d before partitioning between ethyl acetate and aq. sat. ammonium chloride. The separated aqueous layer was extracted with ethyl acetate and the combined organics dried over MgSO4. Purification by silica gel flash chromatography (ethyl acetate/heptane) gave (+/−)-3-{4-[(3,3-dimethyl-cyclobutyl)-(3-methyl-quinolin-2-ylamino)-methyl]-benzoylamino}-propionic acid ethyl ester (37.9 mg) as a clear oil. 1H NMR (400 MHz, CDCl3) δ 7.68 (d, J=8.2 Hz, 2H) 7.59 (t, J=3.9 Hz, 2H) 7.46-7.52 (m, 3H) 7.37-7.45 (m, 1H) 7.11-7.19 (m, 1H) 6.75 (t, J=5.8 Hz, 1H) 5.32 (dd, J=9.7, 6.7 Hz, 1H) 4.75 (d, J=6.6 Hz, 1H) 4.10-4.21 (m, 2H) 3.70 (q, J=6.0 Hz, 2H) 2.55-2.74 (m, 3H) 2.29 (s, 3H) 1.96 (ddd, J=11.1, 8.2, 2.9 Hz, 1H) 1.75-1.84 (m, 1H) 1.64-1.73 (m, 2H) 1.26 (m, 3H) 1.16 (s, 3H) 1.09 (s, 3H); MS (M+1): 474.7.

Aufarbeitung

  1. custombefore partitioning between ethyl acetate and aq. sat. ammonium chloride
  2. extractionThe separated aqueous layer was extracted with ethyl acetate
  3. dry with materialthe combined organics dried over MgSO4
  4. customPurification by silica gel flash chromatography (ethyl acetate/heptane)

Quellen und Nachweise

ORD-Eintrag
ord-727990c21e384f7da5e4bb3322c45cef
Quelldatensatz
uspto-grants-2015_01
Patentnummer
US08927577B2

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