[(2R,3S,4R,5R)-5-(3-acetyl-2,5,6-trichloro-indol-1-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl acetate → 1-[2,5,6-trichloro-1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]indol-3-yl]ethanone

HRID 1863849노트

반응식

HRID 1863849 반응식
[Cl:1][C:2]1[N:3]([C@@H:16]2[O:22][C@H:21]([CH2:23][O:24]C(=O)C)[C@@H:19]([OH:20])[C@H:17]2[OH:18])[C:4]2[C:9]([C:10]=1[C:11](=[O:13])[CH3:12])=[CH:8][C:7]([Cl:14])=[C:6]([Cl:15])[CH:5]=2.C[O-].[Na+]>CO>[Cl:1][C:2]1[N:3]([C@@H:16]2[O:22][C@H:21]([CH2:23][OH:24])[C@@H:19]([OH:20])[C@H:17]2[OH:18])[C:4]2[C:9]([C:10]=1[C:11](=[O:13])[CH3:12])=[CH:8][C:7]([Cl:14])=[C:6]([Cl:15])[CH:5]=2

참가 물질

4

반응물 2

HCID 3012588[(2R,3S,4R,5R)-5-(3-acetyl-2,5,6-trichloro-indol-1-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl acetateHCID 10942334Sodium Methoxide

생성물 1

HCID 30125661-[2,5,6-trichloro-1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]indol-3-yl]ethanone수율 81.3%

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

2,5,6-Trichloro-3-acetyl-1-(5-O-acetyl-β-D-ribofuranosyl)indole (4.43, 232 mg, 0.53 mmol) was dissolved in dry MeOH (20 mL) to which was added sodium methoxide (35 mg, 0.65 mmol). The solution was stirred at room temperature for 45 min, and the solvent was then removed under vacuum. The residue was suspended in 10% aqueous NaHCO3 (50 mL) and the suspension extracted with EtOAc (2×50 mL). The combined organic extracts were dried over MgSO4, filtered and evaporated to yield a white solid. The solid was recrystallized from boiling EtOAc/hexane to yield 170 mg (81%) of 4.46 as a white crystalline solid: mp 249-250 C; Rf0.4 (10% MeOH/CHCl3); 1H-NMR (500 MHz, DMSO-d6): δ 8.63 (s, 1H), 8.41 (s, 1H), 6.07 (d, 1H), 5.45-5.42 (m, 2H, D2O exch.), 5.30 (d, 1H, D2O exch.), 4.44 (q, 1H), 4.17 (d, 1H), 4.03 (d, 1H), 3.75 (b, 2H), 2.63 (s, 3H). 13C-NMR (125 MHz, DMSO-d6): δ 192.17, 133.10, 132.38, 126.21, 126.00, 125.73, 122.00, 115.44, 112.99, 88.97, 86.39, 71.63, 69.54, 60.97, 30.72. HRMS (ES) m/z calcd. for C15H14C13NO5□Na 415.9835, found 415.9843. Anal calcd for C15H14Cl3NO5: C, 45.65; H, 3.58; N, 3.55. Found: C, 45.75; H, 3.78; N, 3.61.

후처리

  1. customthe solvent was then removed under vacuum
  2. extractionthe suspension extracted with EtOAc (2×50 mL)
  3. dry with materialThe combined organic extracts were dried over MgSO4
  4. filtrationfiltered
  5. customevaporated
  6. customto yield a white solid
  7. customThe solid was recrystallized

출처 및 근거

ORD 기록
ord-0fb20473ef7f4000a363d60b807dae16
출처 데이터셋
uspto-grants-2009_12
특허 번호
US07625871B2

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