Pyridine → HCID 86701267, 화합물

HRID 2276068노트

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HRID 2276068 반응식
[C:1]([O:6][C@@H:7]1[C@@H:15]([CH2:16][CH2:17][OH:18])[C:14](=[O:19])[O:13][CH2:12][C@H:11]([NH:20][C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[C:10](=[O:28])[O:9][C@H:8]1[CH3:29])(=[O:5])[CH:2]([CH3:4])[CH3:3].N1C=CC=CC=1.[CH3:36][S:37](Cl)(=[O:39])=[O:38]>C(Cl)Cl>[C:1]([O:6][C@@H:7]1[C@@H:15]([CH2:16][CH2:17][O:18][S:37]([CH3:36])(=[O:39])=[O:38])[C:14](=[O:19])[O:13][CH2:12][C@H:11]([NH:20][C:21]([O:23][C:24]([CH3:26])([CH3:25])[CH3:27])=[O:22])[C:10](=[O:28])[O:9][C@H:8]1[CH3:29])(=[O:5])[CH:2]([CH3:4])[CH3:3]

참가 물질

5

반응물 3

HCID 1049PyridineHCID 31297Methanesulfonyl chlorideHCID 86701260HCID 86701260, 화합물

생성물 1

HCID 86701267HCID 86701267, 화합물수율 84.3%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

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온도
22 °C

실험 절차

To a solution of (3S,6S,7R,8R)-3-(tert-butoxycarbonylamino)-8-(2-hydroxyethyl)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl isobutyrate (660 mg, 1.58 mmol) in CH2Cl2 (15 mL) at 0° C. was added pyridine (750 mg, 9.48 mmol), followed by methanesulfonyl chloride (362 mg, 3.16 mmol). The resulting reaction mixture was warmed up to room temperature (about 22° C.) and stirred overnight. The reaction mixture was partitioned between sat'd aqueous NaHCO3 solution (30 mL) and EtOAc (40 mL) and the phases were separated. The aqueous phase was extracted with additional EtOAc (2×30 mL) and the combined EtOAc extracts were dried over Na2SO4, filtered, and concentrated to dryness. The crude residue was purified via column chromatography (SiO2, hexanes/EtOAc gradient) to afford the title compound (660 mg, 84%) as a white solid: 1H NMR (300 MHz, CDCl3) δ 5.24 (s, 2H), 5.06 (t, J=9.8 Hz, 1H), 4.95-4.77 (m, 2H), 4.32-4.19 (m, 1H), 4.13-4.05 (m, 1H), 3.62 (s, 1H), 2.98 (s, 3H), 2.78 (dd, J=14.9, 6.4 Hz, 1H), 2.62 (dt, J=13.9, 7.0 Hz, 1H), 2.25-2.08 (m, 1H), 1.83 (s, 1H), 1.47 (d, J=11.9 Hz, 9H), 1.28 (d, J=6.3 Hz, 3H), 1.21 (d, J=6.9 Hz, 6H); ESIMS m/z 496 ([M+H]+).

후처리

  1. customThe resulting reaction mixture
  2. customThe reaction mixture was partitioned between sat'd aqueous NaHCO3 solution (30 mL) and EtOAc (40 mL)
  3. customthe phases were separated
  4. extractionThe aqueous phase was extracted with additional EtOAc (2×30 mL)
  5. dry with materialthe combined EtOAc extracts were dried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated to dryness
  8. customThe crude residue was purified via column chromatography (SiO2, hexanes/EtOAc gradient)

출처 및 근거

ORD 기록
ord-cc02c69e0d044141aa114574685affb0
출처 데이터셋
uspto-grants-2015_09
특허 번호
US09131690B2

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