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Hydrochloric Acid → 2-{[(1,1-dimethylethyl)oxy]carbonyl}-6-{N-[(methyloxy)carbonyl]-L-valyl}-2,6-diazaspiro[3,4]octane-7-carboxylic acid

HRID 535139
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HRID 535139 반응식
[CH3:1][O:2][C:3]([NH:5][C@H:6]([C:10]([N:12]1[CH:26]([C:27]([O:29]CC)=[O:28])[CH2:25][C:14]2([CH2:17][N:16]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:15]2)[CH2:13]1)=[O:11])[CH:7]([CH3:9])[CH3:8])=[O:4].O.[OH-].[Li+].Cl>C1COCC1.O.CO>[CH3:24][C:21]([O:20][C:18]([N:16]1[CH2:15][C:14]2([CH2:25][CH:26]([C:27]([OH:29])=[O:28])[N:12]([C:10](=[O:11])[C@H:6]([CH:7]([CH3:8])[CH3:9])[NH:5][C:3]([O:2][CH3:1])=[O:4])[CH2:13]2)[CH2:17]1)=[O:19])([CH3:22])[CH3:23]
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HCID 313Hydrochloric AcidHCID 168937Lithium hydroxide, monohydrateHCID 583130532-(1,1-dimethylethyl) 7-ethyl 6-{N-[(methyloxy)carbonyl]-L-valyl}-2,6-diazaspiro[3,4]octane-2,7-dicarboxylate

생성물 1

HCID 583130782-{[(1,1-dimethylethyl)oxy]carbonyl}-6-{N-[(methyloxy)carbonyl]-L-valyl}-2,6-diazaspiro[3,4]octane-7-carboxylic acid수율 76%

시약·촉매·용매 1

HCID 21892291
Methanol tetrahydrofuran water
용매

실험 절차

To a solution of 2-(1,1-dimethylethyl) 7-ethyl 6-{N-[(methyloxy)carbonyl]-L-valyl}-2,6-diazaspiro[3.4]octane-2,7-dicarboxylate (146) (344 mg, 0.78 mmol) in THF/water/methanol (3 mL/1.5 mL/1.5 mL) was added lithium hydroxide monohydrate (65 mg, 1.56 mmol) and the reaction stirred at room temperature for 1.5 h whereupon it was treated with 1N HCl (1.5 mL). The reaction was partitioned between EtOAc and water (30 mL each), the aqueous layer was extracted with EtOAc (30 mL), the organic layers were combined and dried (MgSO4) and concentrated in vacuo to afford the title compound as a white solid (245 mg, 76% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 12.46 (br. s., 1H) 7.06-7.66 (m, 1H) 4.13-4.32 (m, 1H) 3.88-4.12 (m, 2H) 3.56-3.89 (m, 5H) 3.39-3.57 (m, 3H) 2.24-2.45 (m, 1H) 1.99-2.19 (m, 1H) 1.80-1.95 (m, 1H) 1.26-1.44 (m, 9H) 0.56-1.00 (m, 6H). LC-MS ESI (M−H)−=412.41.

후처리

  1. customThe reaction was partitioned between EtOAc and water (30 mL each)
  2. extractionthe aqueous layer was extracted with EtOAc (30 mL)
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo

출처 및 근거

ORD 기록
ord-6b06123f8d254ec198f6a8958d54a8cc
출처 데이터셋
uspto-grants-2014_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08853416B2

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