Imidazole → 6-O-(4,4'-dimethoxytrityl)-3-O-(2-fluoroethyl)-4-O-(triethylsilyl)-2-deoxy-2-(thymin-1yl)-D-altro-hexitol

HRID 43300

반응식

HRID 43300 반응식
[CH3:1][O:2][C:3]1[CH:46]=[CH:45][C:6]([C:7]([O:22][CH2:23][C@@H:24]([OH:44])[C@@H:25]([OH:43])[C@@H:26]([O:39][CH2:40][CH2:41][F:42])[C@H:27]([N:30]2[CH:38]=[C:36]([CH3:37])[C:34](=[O:35])[NH:33][C:31]2=[O:32])[CH2:28][OH:29])([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[C:8]2[CH:13]=[CH:12][C:11]([O:14][CH3:15])=[CH:10][CH:9]=2)=[CH:5][CH:4]=1.N1C=CN=C1.O=P12OP3(OP(OP(O3)(O1)=O)(=O)O2)=O.Cl[Si:67]([CH2:72][CH3:73])([CH2:70][CH3:71])[CH2:68][CH3:69]>CN(C=O)C.CCOC(C)=O>[CH3:15][O:14][C:11]1[CH:12]=[CH:13][C:8]([C:7]([O:22][CH2:23][C@@H:24]([OH:44])[C@@H:25]([O:43][Si:67]([CH2:72][CH3:73])([CH2:70][CH3:71])[CH2:68][CH3:69])[C@@H:26]([O:39][CH2:40][CH2:41][F:42])[C@H:27]([N:30]2[CH:38]=[C:36]([CH3:37])[C:34](=[O:35])[NH:33][C:31]2=[O:32])[CH2:28][OH:29])([C:16]2[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=2)[C:6]2[CH:45]=[CH:46][C:3]([O:2][CH3:1])=[CH:4][CH:5]=2)=[CH:9][CH:10]=1

참가 물질

7

반응물 4

HCID 795ImidazoleHCID 13819ChlorotriethylsilaneHCID 14812Phosphorus oxide (P4O10)HCID 866614446-O-(4,4'-dimethoxytrityl)-2-deoxy-2(thymin-1yl]-3-O-(2-fluoroethyl)D-altro-hexitol

생성물 1

HCID 866614466-O-(4,4'-dimethoxytrityl)-3-O-(2-fluoroethyl)-4-O-(triethylsilyl)-2-deoxy-2-(thymin-1yl)-D-altro-hexitol수율 82.5%

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

실험 절차

Compound 6, prepared as per the procedures illustrated in Example 13 (2.50 g, 4.00 mmol) was mixed with imidazole (1.36 g, 20.0 mmol) over P2O5 under reduced pressure. This mixture was dissolved in anhydrous DMF (13 mL) and chloro triethylsilane (1.71 mL, 10 mmol) was added. The mixture was stirred at room temperature for 12 hours. The reaction mixture was diluted in EtOAc (100 mL), washed with sat. NaHCO3 (100 mL) and brine (50 mL) then dried over anhydrous Na2SO4, filtered and evaporated. The residue was purified by silica gel column chromatography (50% EtOAc in hexanes) to yield Compound 8 (2.45 g, 82.5%) as a white foam. MS (ES): m/z 760.2 [M+Na]+.

후처리

  1. washwashed with sat. NaHCO3 (100 mL) and brine (50 mL)
  2. dry with materialthen dried over anhydrous Na2SO4
  3. filtrationfiltered
  4. customevaporated
  5. customThe residue was purified by silica gel column chromatography (50% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-f76691064f6648a099b401fbe0225912
출처 데이터셋
uspto-grants-2013_09
특허 번호
US08536320B2

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