Imidazole → HCID 67797177, 화합물

HRID 21717노트

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HRID 21717 반응식
[OH:1][CH2:2][C:3]([C@H:5]1[N:8]([CH:9]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)[CH2:10][C:11]2[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[CH:13][CH:12]=2)[C:7](=[O:28])[C@@H:6]1[C@H:29]([O:31][C:32]([O:34][CH2:35][C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)=[O:33])[CH3:30])=[CH2:4].N1C=CN=C1.[C:47]([Si:51]([CH3:54])([CH3:53])Cl)([CH3:50])([CH3:49])[CH3:48]>CN(C)C=O.O.C(OCC)(=O)C>[Si:51]([O:1][CH2:2][C:3]([C@H:5]1[N:8]([CH:9]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)[CH2:10][C:11]2[CH:12]=[CH:13][C:14]([O:17][CH3:18])=[CH:15][CH:16]=2)[C:7](=[O:28])[C@@H:6]1[C@H:29]([O:31][C:32]([O:34][CH2:35][C:36]1[CH:37]=[CH:38][CH:39]=[CH:40][CH:41]=1)=[O:33])[CH3:30])=[CH2:4])([C:47]([CH3:50])([CH3:49])[CH3:48])([CH3:54])[CH3:53]

참가 물질

7

반응물 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 67796345HCID 67796345, 화합물

생성물 1

HCID 67797177HCID 67797177, 화합물

시약·촉매·용매 3

HCID 962Water용매HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

실험 절차

A solution of (3S,4S)-4-(1-hydroxymethylethenyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone (20 g) and imidazole (5.6 g) in dry dimethylformamide (45 ml) was treated with t-butyldimethylchlorosilane (6.77 g) at room temperature for 2 hours. The reaction mixture was diluted with cold water (200 ml) and ethyl acetate (150 ml). The aqueous layer was extracted with ethyl acetate (150 ml). The combined extracts were washed successively with 5% hydrochloric acid solution (80 ml×2) and brine (80 ml), and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated in vacuo, and the concentrate was crystallized from isopropanol to give crystals of (3S,4S)-4-(1-t-butyldimethylsilyloxymethylethenyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone. m.p., 90°-92° C.

후처리

  1. extractionThe aqueous layer was extracted with ethyl acetate (150 ml)
  2. washThe combined extracts were washed successively with 5% hydrochloric acid solution (80 ml×2) and brine (80 ml)
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationAfter filtration
  5. concentrationthe filtrate was concentrated in vacuo
  6. customthe concentrate was crystallized from isopropanol

출처 및 근거

ORD 기록
ord-e2fb7bf2685541abb042c0d0ee28a3c4
출처 데이터셋
uspto-grants-1995_06
특허 번호
US05424422

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