tert-Butyl {4-[(2R,3R)-3-({[2-(1,3-benzodioxol-5-yl)-5,5-dimethyl-1,3-dioxan-2-yl]methyl}thio)-1-(4-methylphenyl)-4-oxoazetidin-2-yl]phenoxy}acetate → {4-[(2R,3R)-3-{[2-(1,3-benzodioxol-5-yl)-2-oxoethyl]thio}-1-(4-methylphenyl)-4-oxoazetidin-2-yl]phenoxy}acetic acid
反応式
[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([C:10]3([CH2:18][S:19][C@H:20]4[C:23](=[O:24])[N:22]([C:25]5[CH:30]=[CH:29][C:28]([CH3:31])=[CH:27][CH:26]=5)[C@@H:21]4[C:32]4[CH:46]=[CH:45][C:35]([O:36][CH2:37][C:38]([O:40]C(C)(C)C)=[O:39])=[CH:34][CH:33]=4)OCC(C)(C)C[O:11]3)=[CH:9][C:4]=2[O:3][CH2:2]1>C(O)=O>[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([C:10](=[O:11])[CH2:18][S:19][C@H:20]3[C:23](=[O:24])[N:22]([C:25]4[CH:26]=[CH:27][C:28]([CH3:31])=[CH:29][CH:30]=4)[C@@H:21]3[C:32]3[CH:46]=[CH:45][C:35]([O:36][CH2:37][C:38]([OH:40])=[O:39])=[CH:34][CH:33]=3)=[CH:9][C:4]=2[O:3][CH2:2]1参加物
3
反応物 1
生成物 1
試薬・触媒・溶媒 1
実験手順
tert-Butyl {4-[(2R,3R)-3-({[2-(1,3-benzodioxol-5-yl)-5,5-dimethyl-1,3-dioxan-2-yl]methyl}thio)-1-(4-methylphenyl)-4-oxoazetidin-2-yl]phenoxy}acetate (Method 21) (0.21 g, 0.32 mmol) was dissolved in formic acid (10 mL) at room temperature and stirred for 30 minutes. The mixture was concentrated under reduced pressure (temperature<30° C.) and this crude oil was purified by flash-chromatography (heptane:acetone:formic acid 6:4:0.01) to afford the title compound.