Trimethylsilylacetylene → 4-(2-trimethylsilylethynyl)-3-(2,3,4,6-tetra-O-pivaloyl-beta-D-glucopyranosyloxy)-1H-indazole

HRID 1673287노트

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HRID 1673287 반응식
Br[C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4]([O:11][C@@H:12]1[O:38][C@H:37]([CH2:39][O:40][C:41](=[O:46])[C:42]([CH3:45])([CH3:44])[CH3:43])[C@@H:29]([O:30][C:31](=[O:36])[C:32]([CH3:35])([CH3:34])[CH3:33])[C@H:21]([O:22][C:23](=[O:28])[C:24]([CH3:27])([CH3:26])[CH3:25])[C@H:13]1[O:14][C:15](=[O:20])[C:16]([CH3:19])([CH3:18])[CH3:17])=[N:5][NH:6]2.[CH3:47][Si:48]([C:51]#[CH:52])([CH3:50])[CH3:49]>C(N(CC)CC)C.C(OCC)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[CH3:47][Si:48]([CH3:50])([CH3:49])[C:51]#[C:52][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4]([O:11][C@@H:12]1[O:38][C@H:37]([CH2:39][O:40][C:41](=[O:46])[C:42]([CH3:45])([CH3:44])[CH3:43])[C@@H:29]([O:30][C:31](=[O:36])[C:32]([CH3:33])([CH3:34])[CH3:35])[C@H:21]([O:22][C:23](=[O:28])[C:24]([CH3:25])([CH3:26])[CH3:27])[C@H:13]1[O:14][C:15](=[O:20])[C:16]([CH3:19])([CH3:18])[CH3:17])=[N:5][NH:6]2

참가 물질

7

반응물 2

HCID 66111TrimethylsilylacetyleneHCID 673407304-Bromo-3-(2,3,4,6-tetra-O-pivaloyl-beta-D-glucopyranosyloxy)-1H-indazole

생성물 1

HCID 673414354-(2-trimethylsilylethynyl)-3-(2,3,4,6-tetra-O-pivaloyl-beta-D-glucopyranosyloxy)-1H-indazole

시약·촉매·용매 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 178418397HCID 178418397, 화합물촉매HCID 3283Diethyl Ether용매HCID 8471Triethylamine용매

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온도
80 °C

실험 절차

To a solution of 4-bromo-3-(2,3,4,6-tetra-O-pivaloyl-β-D-glucopyranosyloxy)-1H-indazole (0.5 g) in triethylamine (5 mL) were added trimethylsilylacetylene (0.2 mL), tetrakis(triphenylphosphine)palladium (0) (81 mg) and copper (I) iodide (27 mg), and the mixture was stirred at 80° C. under an argon atmosphere overnight. The reaction mixture was cooled to room temperature and diluted with diethyl ether. The insoluble material was removed by filtration. The filtrate was washed with water and brine, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=4/1-3/1-2/1) to give 4-(2-trimethylsilylethynyl)-3-(2,3,4,6-tetra-O-pivaloyl-β-D-glucopyranosyloxy)-1H-indazole (0.4 g). This material was dissolved in tetrahydrofuran (5 mL). To the solution was added tetra(n-butyl)ammonium fluoride (0.15 g), and the mixture was stirred at room temperature for 1 hour. The reaction mixture was poured into 0.5 mol/L hydrochloric acid, and the resulting mixture was extracted with ethylacetate. The extract was washed with water and brine, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=2/1-1/1) to give the title compound (0.33 g).

후처리

  1. temperatureThe reaction mixture was cooled to room temperature
  2. customThe insoluble material was removed by filtration
  3. washThe filtrate was washed with water and brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. customThe solvent was removed under reduced pressure
  6. customthe residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=4/1-3/1-2/1)

출처 및 근거

ORD 기록
ord-2f586458cca34a0da2a0da16421b22c0
출처 데이터셋
uspto-grants-2011_08
특허 번호
US07998975B2

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