Formaldehyde → (3S,8S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-7-((S)-1-phenyl-propyl)-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carboxylic acid methyl ester

HRID 879683Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 879683
[CH3:1][O:2][C:3](=[O:42])[C@@H:4]([NH:32][C@H:33]([C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)[CH2:34][CH3:35])[CH2:5][C:6]1[CH:31]=[CH:30][C:9]2[O:10][C@@H:11]([C:14]3[CH:19]=[CH:18][C:17]([O:20][CH2:21][C:22]4[CH:27]=[CH:26][C:25]([Cl:28])=[C:24]([Cl:29])[CH:23]=4)=[CH:16][CH:15]=3)[CH2:12][O:13][C:8]=2[CH:7]=1.C=O.F[C:46](F)(F)C(O)=O.C([O-])(O)=O.[Na+]>O1CCOCC1>[CH3:1][O:2][C:3]([C@@H:4]1[CH2:5][C:6]2[CH:7]=[C:8]3[O:13][CH2:12][C@H:11]([C:14]4[CH:15]=[CH:16][C:17]([O:20][CH2:21][C:22]5[CH:27]=[CH:26][C:25]([Cl:28])=[C:24]([Cl:29])[CH:23]=5)=[CH:18][CH:19]=4)[O:10][C:9]3=[CH:30][C:31]=2[CH2:46][N:32]1[C@H:33]([C:36]1[CH:37]=[CH:38][CH:39]=[CH:40][CH:41]=1)[CH2:34][CH3:35])=[O:42]

Komponenten

6

Edukt 4

HCID 712Formaldehyde2×HCID 6422Trifluoroacetic acidHCID 516892Sodium BicarbonateHCID 58327321(S)-3-{(S)-2-[4-(3,4-Dichloro-benzyloxy)-phenyl]-2,3-dihydro-benzo[1,4]dioxin-6-yl}-2-((S)-1-phenyl-propylamino)-propionic acid methyl ester

Produkt 1

HCID 58327581(3S,8S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-7-((S)-1-phenyl-propyl)-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carboxylic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

(S)-3-{(S)-2-[4-(3,4-Dichloro-benzyloxy)-phenyl]-2,3-dihydro-benzo[1,4]dioxin-6-yl}-2-((S)-1-phenyl-propylamino)-propionic acid methyl ester (893 mg) was dissolved in 80 mL dry dioxane and 133 mg paraformaldehyde and 20 mL trifluoroacetic acid were added. The reaction stirred 12 h at rt, then 66 mg more paraformaldehyde was added while stirring at rt. After 3 h aqueous NaHCO3 was added until a pH of 7 was achieved, then the mixture was extracted with EtOAc. The organic extract was washed with brine and dried over Na2SO4 and evaporated. The residue was purified by silica gel flash chromatography (9:1 to 8:2 hexanes/EtOAc) to give 872 mg desired product after drying. 1H NMR (400 MHz, acetone-d6): 7.72 (d, 1H), 7.62 (d, 1H), 7.51-7.43 (m, 3H), 7.38-7.25 (m, 5H), 7.10 (m, 2H), 6.67 (s, 1H), 6.60 (s, 1H), 5.20 (s, 2H), 5.09 (m, 1H), 4.30 (m, 1H), 4.13 (m, 2H), 3.99 (m, 1H), 3.92 (m, 1H), 3.59 (m, 1H), 3.52 (s, 3H), 2.96-2.78 (m, 2H), 2.16 (m, 1H), 1.68 (m, 1H), 0.65 (t, 3H).

Aufarbeitung

  1. stirringwhile stirring at rt
  2. extractionthe mixture was extracted with EtOAc
  3. extractionThe organic extract
  4. washwas washed with brine
  5. dry with materialdried over Na2SO4
  6. customevaporated
  7. customThe residue was purified by silica gel flash chromatography (9:1 to 8:2 hexanes/EtOAc)

Quellen und Nachweise

ORD-Eintrag
ord-88945894b948497e8ce9d8ad14813820
Quelldatensatz
uspto-grants-2015_03
Patentnummer
US08987295B2

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