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Lithium Hydroxide → 4-({(2S,5R)-1-(tert-butoxycarbonyl)-5-[(R)-{[tert-butyl(dimethyl)silyl]oxy}(pyridin-3-yl)methyl]pyrrolidin-2-yl}methyl)benzoic acid

HRID 1911833
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HRID 1911833 반응식
[Si:1]([O:8][C@H:9]([C:33]1[CH:34]=[N:35][CH:36]=[CH:37][CH:38]=1)[C@H:10]1[CH2:14][CH2:13][C@@H:12]([CH2:15][C:16]2[CH:21]=[CH:20][C:19]([C:22]([O:24]C)=[O:23])=[CH:18][CH:17]=2)[N:11]1[C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[OH-].[Li+]>CO.O.O>[C:29]([O:28][C:26]([N:11]1[C@@H:10]([C@H:9]([O:8][Si:1]([C:4]([CH3:6])([CH3:5])[CH3:7])([CH3:3])[CH3:2])[C:33]2[CH:34]=[N:35][CH:36]=[CH:37][CH:38]=2)[CH2:14][CH2:13][C@H:12]1[CH2:15][C:16]1[CH:17]=[CH:18][C:19]([C:22]([OH:24])=[O:23])=[CH:20][CH:21]=1)=[O:27])([CH3:30])([CH3:31])[CH3:32]
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참가 물질

5

반응물 2

HCID 3939Lithium HydroxideHCID 86666749Tert-butyl (2R,5S)-2-[(R)-{[tert-butyl(dimethyl)silyl]oxy}(pyridin-3-yl)methyl]-5-[4-(methoxycarbonyl)benzyl]pyrrolidine-1-carboxylate

생성물 1

HCID 679717394-({(2S,5R)-1-(tert-butoxycarbonyl)-5-[(R)-{[tert-butyl(dimethyl)silyl]oxy}(pyridin-3-yl)methyl]pyrrolidin-2-yl}methyl)benzoic acid수율 74%

시약·촉매·용매 2

HCID 962Water용매
HCID 22242641
Methanol--water (1/1)
용매

실험 절차

To a stirred solution of the title compound from Step D (2.5 g, 4.6 mmol) in methanol/water 4:1 (30 mL) was added lithium hydroxide (533 mg, 23.1 mmol). The resulting mixture was stirred at RT overnight. The mixture was diluted with water and extracted with ether. The aqueous layer was acidified with 1N citric acid to PH 4.5, and then extracted with ethyl acetate. The organic layer was separated and washed with water, brine, dried over Na2SO4, and concentrated. The residue was purified by reverse phase HPLC (Luna10u, 250×50 mm I.D.; 45-65% 0.1% trifluoroacetic acid in acetonitrile/0.1% trifluoroacetic acid in water gradient) to afford 1.31 g (74%) of the title compound (i-3) as a white solid. 1H NMR (400 MHz, CDCl3): δ 8.64 (s, 2H), 7.93 (d, J=7.8 Hz, 2H), 7.80 (s, 1H), 7.44-7.38 (m, 1H), 7.03 (s, 2H), 5.66-5.33 (m, 1H), 4.16 (s, 1H), 4.00-3.88 (m, 1H), 3.01-2.95 (m, 1H), 2.68-1.58 (m, 1H), 2.04-1.83 (m, 2H), 1.60 (s, 9H), 1.31-1.20 (m, 2H), 0.96 (s, 9H), 0.17 (s, 3H), 0.00 (s, 3H). MS: m/z (ESI) 527 (M+1).

후처리

  1. extractionextracted with ether
  2. extractionextracted with ethyl acetate
  3. customThe organic layer was separated
  4. washwashed with water, brine
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated
  7. customThe residue was purified by reverse phase HPLC (Luna10u, 250×50 mm I.D.; 45-65% 0.1% trifluoroacetic acid in acetonitrile/0.1% trifluoroacetic acid in water gradient)

출처 및 근거

ORD 기록
ord-9e7e776b84a14e7fa0ebc8be4921bf66
출처 데이터셋
uspto-grants-2013_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08604038B2

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