Carbon Dioxide → 2-[((1r)-1-{1-[3-(1-Methylethyl)-1,2,4-oxadiazol-5-yl]-4-piperidinyl}ethyl)oxy]-5-[4-(methylsulfonyl)phenyl]pyrazine
反応式
[CH3:1][CH:2]([C:4]1[N:8]=[C:7]([N:9]2[CH2:14][CH2:13][CH:12]([CH:15]([O:17][C:18]3[CH:23]=[N:22][C:21]([C:24]4[CH:29]=[CH:28][C:27]([S:30]([CH3:33])(=[O:32])=[O:31])=[CH:26][CH:25]=4)=[CH:20][N:19]=3)[CH3:16])[CH2:11][CH2:10]2)[O:6][N:5]=1)[CH3:3].C(=O)=O>CO>[CH3:3][CH:2]([C:4]1[N:8]=[C:7]([N:9]2[CH2:10][CH2:11][CH:12]([C@H:15]([O:17][C:18]3[CH:23]=[N:22][C:21]([C:24]4[CH:25]=[CH:26][C:27]([S:30]([CH3:33])(=[O:32])=[O:31])=[CH:28][CH:29]=4)=[CH:20][N:19]=3)[CH3:16])[CH2:13][CH2:14]2)[O:6][N:5]=1)[CH3:1]参加物
4
反応物 2
生成物 1
試薬・触媒・溶媒 1
実験手順
The racemic 2-[(1-{1-[3-(1-methylethyl)-1,2,4-oxadiazol-5-yl]-4-piperidinyl}ethyl)oxy]-5-[4-(methylsulfonyl)phenyl]pyrazine (prepared as in Example 156) was subjected to Chiral HPLC [column: AS-H, column mobile phase: 70% CO2: 30% MeOH (2 mL/min), pressure 140 bar, temperature 40° C., 215 nm] analysis and then separated to give two (R and S) enantiomers. The title compound was isolated as an off-white solid with Tr of 23.42 min (first eluting peak). The (R) absolute stereochemistry was assigned by Ab initio VCD analysis.