Formaldehyde → (3R,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 879747노트

반응식

HRID 879747 반응식
[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>O1CCOCC1.CCOC(C)=O>[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]

참가 물질

6

반응물 3

HCID 712FormaldehydeHCID 6422Trifluoroacetic acidHCID 58327352(S)-3-{(R)-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

생성물 1

HCID 58327464(3R,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

시약·촉매·용매 2

HCID 8857Ethyl Acetate용매HCID 312751,4-Dioxane용매2회

실험 절차

(S)-3-{(R)-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 (1.0 g) was dissolved in 37 mL dry dioxane and 149 mg paraformaldehyde added. 30 mL dry dioxane and 17 mL trifluoroacetic acid were mixed, cooled on ice and added to the reaction mixture. The reaction was stirred for 20 hours at room temperature and diluted with EtOAc. The organic layer was washed with 10% sodium, dried over Na2SO4 and evaporated. The residue was purified by silica gel flash chromatography (DCM+0.2% TEA) to give 934 mg of product after drying. 1H NMR (400 MHz, acetone-d6): 7.71 (d, 1H), 7.61 (d, 1H), 7.50-7.41 (m, 3H), 7.38-7.26 (m, 5H), 7.09 (m, 2H), 6.67 (s, 1H), 6.60 (s, 1H), 5.19 (s, 2H), 5.10 (m, 1H), 4.32 (m, 1H), 4.12 (m, 2H), 4.01 (m, 1H), 3.92 (m, 1H), 3.59 (m, 1H), 3.51 (s, 3H), 2.97-2.78 (m, 2H), 2.16 (m, 1H), 1.68 (m, 1H), 0.66 (t, 3H).

후처리

  1. temperaturecooled on ice
  2. additionadded to the reaction mixture
  3. washThe organic layer was washed with 10% sodium
  4. dry with materialdried over Na2SO4
  5. customevaporated
  6. customThe residue was purified by silica gel flash chromatography (DCM+0.2% TEA)

출처 및 근거

ORD 기록
ord-f7c9859fb8774230abd00424437253c0
출처 데이터셋
uspto-grants-2015_03
특허 번호
US08987295B2

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