1-(4(S)-benzyl-2,2-dimethyl-oxazolidin-3-yl)-2-(2-biphenyl-4-yl-furan-5-yl)-2-hydroxy-ethanone → 2-acetoxy-1-(4(S)-benzyl-2,2-dimethyl-oxazolidin-3-yl)-2-(2-biphenyl-4-yl-furan-5-yl)-ethanone
Reaction equation
[C:1](OC(C1C=CN(C2C=CC(C3C=CC=CC=3)=CC=2)C=1)C(N1[C@@H](CC2C=CC=CC=2)COC1(C)C)=O)(=[O:3])[CH3:2].[CH2:39]([C@H:46]1[CH2:50][O:49][C:48]([CH3:52])([CH3:51])[N:47]1[C:53](=[O:73])[CH:54]([C:56]1[O:60][C:59]([C:61]2[CH:66]=[CH:65][C:64]([C:67]3[CH:72]=[CH:71][CH:70]=[CH:69][CH:68]=3)=[CH:63][CH:62]=2)=[CH:58][CH:57]=1)[OH:55])[C:40]1[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=1>>[C:1]([O:55][CH:54]([C:56]1[O:60][C:59]([C:61]2[CH:62]=[CH:63][C:64]([C:67]3[CH:68]=[CH:69][CH:70]=[CH:71][CH:72]=3)=[CH:65][CH:66]=2)=[CH:58][CH:57]=1)[C:53]([N:47]1[C@@H:46]([CH2:39][C:40]2[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=2)[CH2:50][O:49][C:48]1([CH3:52])[CH3:51])=[O:73])(=[O:3])[CH3:2]Participants
Reactant 2
Product 1
Procedure
According to the procedure described in Example 13 for the preparation of 2-acetoxy-1-(4(S)-benzyl-2,2-dimethyl-oxazolidin-3-yl)-2-(biphenyl-4-yl-1H-pyrrol-3-yl)-ethanone, 1-(4(S)-benzyl-2,2-dimethyl-oxazolidin-3-yl)-2-(2-biphenyl-4-yl-furan-5-yl)-2-hydroxy-ethanone was acylated to furnish in quantitative yield 2-acetoxy-1-(4(S)-benzyl-2,2-dimethyl-oxazolidin-3-yl)-2-(2-biphenyl-4-yl-furan-5-yl)-ethanone as an off white solid, mp 120-8° C., which was used without further purification. 1H NMR: δ 7.75 (d, 2H, J=8.5 Hz), 7.66-7.62 (m, 4H), 7.46 (t, 2H, J=7.4 Hz), 7.39-7.22 (m, 6H), 6.70 (d, 1H, J=3.7 Hz), 6.62 (d, 1H, J=3.3 Hz), 6.39 (s, 1H), 3.86-3.79 (m, 2H), 3.64-3.60 (m, 1H), 3.39 (d, 1H, J=14.0 Hz), 2.96 (dd, 1H, J=11.4, 14.0 Hz), 2.25 (s, 3H), 1.78 (s, 3H). Anal. Calculated for C32H31NO5: C, 75.42; H, 6.13; N, 2.75. Found: C, 75.27; H, 6.22; N, 2.65.
Sources & evidence
- ORD record
- ord-2ef2a27f11dd41d9a8f295af33f60d6e
- Source dataset
- uspto-grants-2002_12
- Patent number
- US06495699B2
Reaction notes
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