Carbon Dioxide → 1-methylethyl 4-[(1S)-1-({5-[4-(methylsulfonyl)phenyl]-2-pyrazinyl}oxy)ethyl]-1-piperidinecarboxylate

HRID 423651ノート

反応式

HRID 423651 の反応式
[CH3:1][S:2]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[N:12]=[CH:13][C:14]([O:17][CH:18]([CH:20]3[CH2:25][CH2:24][N:23]([C:26]([O:28][CH:29]([CH3:31])[CH3:30])=[O:27])[CH2:22][CH2:21]3)[CH3:19])=[N:15][CH:16]=2)=[CH:7][CH:6]=1)(=[O:4])=[O:3].C(=O)=O>CO>[CH3:1][S:2]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[N:12]=[CH:13][C:14]([O:17][C@H:18]([CH:20]3[CH2:25][CH2:24][N:23]([C:26]([O:28][CH:29]([CH3:31])[CH3:30])=[O:27])[CH2:22][CH2:21]3)[CH3:19])=[N:15][CH:16]=2)=[CH:7][CH:6]=1)(=[O:4])=[O:3]

参加物

4

反応物 2

HCID 280Carbon DioxideHCID 59177778HCID 59177778、化合物

生成物 1

HCID 249955901-methylethyl 4-[(1S)-1-({5-[4-(methylsulfonyl)phenyl]-2-pyrazinyl}oxy)ethyl]-1-piperidinecarboxylate

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

The racemic 1-methylethyl 4-[1-({5-[4-(methylsulfonyl)phenyl]-2-pyrazinyl}oxy)ethyl]-1-piperidinecarboxylate (prepared as in Example 162) was subjected to Chiral HPLC [column: AS-H, column mobile phase: 85% CO2: 15% MeOH (2 mL/min), pressure 140 bar, temperature 40° C., 215 nm] analysis and then separated to give two (R and S) enantiomers, which were further purified by chromatography on an ISCO silica gel column using 0 to 50% EtOAc/hexanes. The title compound was isolated as a white foam with Tr of 13.37 min (first eluting peak). The (S) absolute stereochemistry was assigned by Ab initio VCD analysis.

後処理

  1. customseparated
  2. customto give two (R and S) enantiomers, which
  3. customwere further purified by chromatography on an ISCO silica gel column

出典と根拠

ORDレコード
ord-243cd0c7a7c54e5c98b980e1ab982288
出典データセット
uspto-grants-2012_01
特許番号
US08101634B2

反応ノート

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