Water → N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-beta-alanine pivaloyloxymethyl ester

HRID 1934396ノート

反応式

HRID 1934396 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11](/[CH:14]=[CH:15]/[C:16]([N:18]2[CH2:23][CH2:22][CH2:21][C@@H:20]([C:24]([NH:26][C@H:27]([C:32]#[CH:33])[CH2:28][C:29]([OH:31])=[O:30])=[O:25])[CH2:19]2)=[O:17])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C([O-])([O-])=O.[K+].[K+].I[CH2:41][O:42][C:43](=[O:48])[C:44]([CH3:47])([CH3:46])[CH3:45].O>CN(C)C=O>[C:43]([O:42][CH2:41][O:30][C:29](=[O:31])[CH2:28][C@@H:27]([C:32]#[CH:33])[NH:26][C:24]([C@@H:20]1[CH2:21][CH2:22][CH2:23][N:18]([C:16](=[O:17])/[CH:15]=[CH:14]/[CH:11]2[CH2:10][CH2:9][N:8]([C:6]([O:5][C:1]([CH3:3])([CH3:2])[CH3:4])=[O:7])[CH2:13][CH2:12]2)[CH2:19]1)=[O:25])(=[O:48])[C:44]([CH3:47])([CH3:46])[CH3:45]

参加物

6

反応物 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 104401Iodomethyl pivalateHCID 86758027N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-beta-alanine

生成物 1

HCID 86758034N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-beta-alanine pivaloyloxymethyl ester収率 59.3%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒2 回

反応条件

温度
0 °C

実験手順

To a solution of N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-β-alanine (0.5 g) in dimethylformamide (5 ml) was added K2CO3 (75 mg) under stirring at 0° C., stirred for 15 minutes, and pivalic acid iodomethyl ester (0.61 g) in dimethylformamide (3 ml) was added to the mixture. After stirring at room temperature for 1 hour, the mixture was poured into water and extracted with ethyl acetate. The extract was washed with water and brine, dried over MgSO41 and evaporated in vacuo, subsequently. The residue was purified by column chromatography on silica gel eluting with CHCl3:MeOH=(98:2) to give N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-β-alanine pivaloyloxymethyl ester as a colorless oil (0.37 g, 59.3%).

後処理

  1. stirringstirred for 15 minutes
  2. stirringAfter stirring at room temperature for 1 hour
  3. extractionextracted with ethyl acetate
  4. washThe extract was washed with water and brine
  5. customdried over MgSO41
  6. customevaporated in vacuo
  7. customThe residue was purified by column chromatography on silica gel eluting with CHCl3

出典と根拠

ORDレコード
ord-f308b3b4c15948ba8230851d2e8c3a66
出典データセット
uspto-grants-2002_05
特許番号
US06384028B1

反応ノート

読み込み中…