Methylhydrazine → (2R,3R,4S,5R)-2-(6,7-dichloro-3-methyl-pyrazolo[3,4-b]indol-4-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol

HRID 28357

反応式

HRID 28357 の反応式
Cl[C:2]1[N:3]([C@@H:15]2[O:21][C@H:20]([CH2:22][OH:23])[C@@H:18]([OH:19])[C@H:16]2[OH:17])[C:4]2[C:9]([C:10]=1[CH:11]=O)=[CH:8][C:7]([Cl:13])=[C:6]([Cl:14])[CH:5]=2.[CH3:24][NH:25][NH2:26].CO.O>CO>[Cl:13][C:7]1[CH:8]=[C:9]2[C:4](=[CH:5][C:6]=1[Cl:14])[N:3]([C@@H:15]1[O:21][C@H:20]([CH2:22][OH:23])[C@@H:18]([OH:19])[C@H:16]1[OH:17])[C:2]1[N:25]([CH3:24])[N:26]=[CH:11][C:10]2=1

参加物

5

反応物 3

HCID 6061MethylhydrazineHCID 3011610FtcriHCID 22242641Methanol--water (1/1)

生成物 1

HCID 3012226(2R,3R,4S,5R)-2-(6,7-dichloro-3-methyl-pyrazolo[3,4-b]indol-4-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol収率 33%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

2,5,6-Trichloro-3-formyl-1-(β-D-ribofuranosyl)indole (4.3, 82 mg, 0.22 mmol) was dissolved in methanol (4 mL) to which was added methylhydrazine (0.5 mL). The solution was stirred at room temperature for 16 h, then the solvent was removed under vacuum. The residue was suspended in 20 mL of brine and extracted with EtOAc (2×20 mL). The combined organic extracts were dried over MgSO4, filtered and evaporated to yield a yellow oil. The oil was subjected to column chromatography (40×350 mm) on C18-reverse phase silica gel with 75% MeOH/water. Fractions containing product were pooled and evaporated to yield 29 mg (33%) of 4.36 as a pale yellow solid: mp 135-138° C.; Rf 0.6 (20% MeOH/CHCl3); 1H-NMR (500 MHz, DMSO-d6): δ 8.25 (s, 1H), 7.94 (s, 1H), 7.73 (s, 1H), 5.95 (d, 1H), 5.38 (d, 1H, D2O exch.), 5.25 (m, 2H, D2O exch.), 4.21 (q, 1H), 4.13 (m, 1H), 4.05 (s, 3H), 3.97 (m, 1H), 3.74 (m, 2H). 13C-NMR (125 MHz, DMSO-d6): δ 146.23, 139.94, 128.98, 123.94, 122.80, 120.16, 119.24, 115.28, 109.15, 88.91, 85.71, 71.94, 68.75, 60.89, 37.81. HRMS (ES) m/z calcd. for C15H15Cl2N3O4·Na·MeOH 426.0599, found 426.0593. Anal calcd for C15H15Cl2N3O4: C, 48.40; H, 4.06; N, 11.29. Found: C, 48.13; H, 4.16; N, 11.12.

後処理

  1. customthe solvent was removed under vacuum
  2. extractionextracted with EtOAc (2×20 mL)
  3. dry with materialThe combined organic extracts were dried over MgSO4
  4. filtrationfiltered
  5. customevaporated
  6. customto yield a yellow oil
  7. additionFractions containing product
  8. customevaporated

出典と根拠

ORDレコード
ord-543229d5e34a4a068f53bbfe3b25a6eb
出典データセット
uspto-grants-2008_09
特許番号
US07419963B2

関連ノート

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