[(2R,3S,4R,5R)-3,4-dihydroxy-5-(2,5,6-trichloro-3-propanoyl-indol-1-yl)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]propan-1-one

HRID 1863850노트

반응식

HRID 1863850 반응식
[Cl:1][C:2]1[N:3]([C@@H:17]2[O:23][C@H:22]([CH2:24][O:25]C(=O)C)[C@@H:20]([OH:21])[C@H:18]2[OH:19])[C:4]2[C:9]([C:10]=1[C:11](=[O:14])[CH2:12][CH3:13])=[CH:8][C:7]([Cl:15])=[C:6]([Cl:16])[CH:5]=2.C[O-].[Na+]>CO.CO.C(Cl)(Cl)Cl>[Cl:1][C:2]1[N:3]([C@@H:17]2[O:23][C@H:22]([CH2:24][OH:25])[C@@H:20]([OH:21])[C@H:18]2[OH:19])[C:4]2[C:9]([C:10]=1[C:11](=[O:14])[CH2:12][CH3:13])=[CH:8][C:7]([Cl:15])=[C:6]([Cl:16])[CH:5]=2

참가 물질

5

반응물 2

HCID 3012589[(2R,3S,4R,5R)-3,4-dihydroxy-5-(2,5,6-trichloro-3-propanoyl-indol-1-yl)tetrahydrofuran-2-yl]methyl acetateHCID 10942334Sodium Methoxide

생성물 1

HCID 30125781-[2,5,6-trichloro-1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]indol-3-yl]propan-1-one수율 198.1%

시약·촉매·용매 2

HCID 887Methanol용매HCID 21584188Chloroform methanol용매2회

실험 절차

2,5,6-Trichloro-3-propionyl-1-(5-O-acetyl-β-D-ribofuranosyl)indole (4.44, 90 mg, 0.21 mmol) was dissolved in dry MeOH (15 mL) to which was added sodium methoxide (14 mg, 0.26 mmol). The solution was stirred at room temperature for 40 min, and the solvent was then removed under vacuum. The residue was suspended in brine (50 mL) and water (5 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 dissolved in 10% MeOH/CHCl3 (1 mL) and subjected to column chromatography (40×350 mm) on silica gel with 10% MeOH/CHCl3. Fractions containing product were pooled and evaporated to yield a white solid which was recrystallized from boiling EtOAc to yield 170 mg (81%) of 4.47 as a white crystalline solid: mp 239-240 C; Rf0.3 (10% MeOH/CHCl3); 1H-NMR (500 MHz, DMSO-d6): δ 8.63 (s, 1H), 8.44 (s, 1H), 6.06 (d, 1H), 5.44-5.41 (m, 2H, D2O exch.), 5.29 (d, 1H, D2O exch.), 4.42 (q, 1H), 4.17 (s, 1H), 3.74 (m, 2H), 3.04 (dd, 2H), 1.12 (t, 3H). 13C-NMR (125 MHz, DMSO-d6): δ 195.17, 132.45, 132.41, 126.13, 125.91, 125.84, 122.09, 115.39, 112.60, 88.90, 86.36, 71.58, 69.54, 60.97, 35.05, 7.98. HRMS (EI) m/z calcd. for C16H16Cl3NO5 407.0094, found 407.0089. Anal calcd for C16H16Cl3NO5: C, 47.02; H, 3.95; N, 3.43. Found: C, 46.85; H, 3.96; N, 3.47.

후처리

  1. customthe solvent was then removed under vacuum
  2. extractionwater (5 mL), and the 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. additionFractions containing product
  8. customevaporated
  9. customto yield a white solid which
  10. customwas recrystallized

출처 및 근거

ORD 기록
ord-99ee44deb6a44562b719336e670d2b59
출처 데이터셋
uspto-grants-2009_12
특허 번호
US07625871B2

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