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Tetrabutylammonium Fluoride → tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-8-hydroxy-9-methyl-7-(1-naphthylmethyl)-2-oxo-1,5-dioxonan-3-yl]carbamate

HRID 708990
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HRID 708990 반응식
[C:1]([O:5][C:6]([N:8]([C@H:16]1[CH2:24][O:23][CH2:22][C@H:21]([CH2:25][C:26]2[C:35]3[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=3)[CH:29]=[CH:28][CH:27]=2)[C@@H:20]([O:36][Si](C(C)C)(C(C)C)C(C)C)[C@H:19]([CH3:47])[O:18][C:17]1=[O:48])[C:9](=[O:15])[O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:7])([CH3:4])([CH3:3])[CH3:2].CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C1COCC1.[Na+].[Cl-]>[C:11]([O:10][C:9]([N:8]([C@H:16]1[CH2:24][O:23][CH2:22][C@H:21]([CH2:25][C:26]2[C:35]3[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=3)[CH:29]=[CH:28][CH:27]=2)[C@@H:20]([OH:36])[C@H:19]([CH3:47])[O:18][C:17]1=[O:48])[C:6](=[O:7])[O:5][C:1]([CH3:3])([CH3:4])[CH3:2])=[O:15])([CH3:12])([CH3:13])[CH3:14]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 2

HCID 2724141Tetrabutylammonium FluorideHCID 123241785tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-9-methyl-7-(1-naphthylmethyl)-2-oxo-8-triisopropylsilyloxy-1,5-dioxonan-3-yl]carbamate

생성물 1

HCID 117974424tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-8-hydroxy-9-methyl-7-(1-naphthylmethyl)-2-oxo-1,5-dioxonan-3-yl]carbamate수율 72%

시약·촉매·용매 2

HCID 5234
Sodium Chloride
용매
HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-9-methyl-7-(1-naphthylmethyl)-2-oxo-8-triisopropylsilyloxy-1,5-dioxonan-3-yl]carbamate (2.54 g, 3.70 mmol) in THF (18.5 ml) was added TBAF (1.94 g, 7.41 mmol, 1M in THF) at room temperature. The reaction was stirred for 3.5 h, diluted with a 1/2 sat. aqueous NaCl solution (10 mL), and extracted with EtOAc (3×10 mL). The combined extracts were dried over Na2SO4, filtered, and concentrated to dryness under reduced pressure. The resulting clear oil was purified by flash chromatography (SiO2, 0→50% acetone/hexanes) to afford tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-8-hydroxy-9-methyl-7-(1-naphthylmethyl)-2-oxo-1,5-dioxonan-3-yl]carbamate (1.41 g, 72%) as a white solid: 1H NMR (400 MHz, CDCl3) δ 8.11 (dd, J=8.5, 1.4 Hz, 1H), 7.87-7.79 (m, 1H), 7.72 (d, J=8.1 Hz, 1H), 7.54-7.41 (m, 2H), 7.42-7.27 (m, 2H), 5.19 (dd, J=8.8, 5.7 Hz, 1H), 5.00-4.88 (m, 1H), 4.10 (dd, J=11.9, 5.8 Hz, 1H), 3.89 (dd, J=12.0, 8.7 Hz, 1H), 3.68-3.51 (m, 4H), 2.79 (t, J=12.2 Hz, 1H), 2.58-2.51 (m, 1H), 2.15 (q, J=8.7, 7.4 Hz, 1H), 1.51 (d, J=6.4 Hz, 3H), 1.46 (s, 18H); 13C NMR (101 MHz, CDCl3) δ 169.95, 152.69, 135.84, 134.02, 132.04, 128.77, 127.46, 127.16, 126.03, 125.56, 125.25, 124.04, 83.17, 77.69, 76.26, 73.23, 70.87, 57.38, 46.90, 33.38, 27.92, 18.67; ESIMS m/z 553 ([M+Na]+).

후처리

  1. extractionextracted with EtOAc (3×10 mL)
  2. dry with materialThe combined extracts were dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated to dryness under reduced pressure
  5. customThe resulting clear oil was purified by flash chromatography (SiO2, 0→50% acetone/hexanes)

출처 및 근거

ORD 기록
ord-27ca4e343ef34b2f9f7a52435dc8df4a
출처 데이터셋
uspto-grants-2015_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09179674B2

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