(2S)-2-[(1,2,3,3a,4,8b-Hexahydrocyclopenta[b]Indol-5-ylcarbonyl)Amino]-Propanoic Acid → (2S)-2-Methyl-2,3,8,9,10,10a-Hexahydro-7bH-Cyclopenta[b][1,4]Diazepino-[6,7,1-hi]Indole-1,4-Dione

HRID 916613ノート

反応式

HRID 916613 の反応式
[CH2:1]1[CH:12]2[CH:4]([NH:5][C:6]3[C:7]([C:13]([NH:15][C@@H:16]([CH3:20])[C:17](O)=[O:18])=[O:14])=[CH:8][CH:9]=[CH:10][C:11]=32)[CH2:3][CH2:2]1>C(O)(=O)C>[CH3:20][C@@H:16]1[NH:15][C:13](=[O:14])[C:7]2=[C:6]3[C:11](=[CH:10][CH:9]=[CH:8]2)[CH:12]2[CH2:1][CH2:2][CH2:3][CH:4]2[N:5]3[C:17]1=[O:18]

参加物

3

反応物 1

HCID 12132977(2S)-2-[(1,2,3,3a,4,8b-Hexahydrocyclopenta[b]Indol-5-ylcarbonyl)Amino]-Propanoic Acid

生成物 1

HCID 69263029(2S)-2-Methyl-2,3,8,9,10,10a-Hexahydro-7bH-Cyclopenta[b][1,4]Diazepino-[6,7,1-hi]Indole-1,4-Dione収率 64%

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒

実験手順

A solution of (2S)-2-[(1,2,3,3a,4,8b-hexahydrocyclopenta[b]indol-5-ylcarbonyl)amino]propanoic acid (6.1 mmol, 1.6 g) was dissolved in acetic acid (50 mL) and heated to reflux for 18 h. The reaction was allowed to cool to room temperature and was concentrated to dryness. The crude material was purified by flash column chromatography (silica gel; 1:1 ethyl acetate-hexanes) to provide two diastereomers: less polar product (0.88 mmol, 0.23 g, 14%) and more polar product (0.18 mmol, 45 mg, 3%). The mixed fractions were also collected to provide another 3.9 mmol (1.0 g, 64%) of material.

後処理

  1. temperatureheated
  2. temperatureto reflux for 18 h
  3. concentrationwas concentrated to dryness
  4. customThe crude material was purified by flash column chromatography (silica gel; 1:1 ethyl acetate-hexanes)
  5. customto provide two diastereomers
  6. customThe mixed fractions were also collected

出典と根拠

ORDレコード
ord-7de1338d83e84513bcd73c247cc8397a
出典データセット
uspto-grants-2007_09
特許番号
US07271163B2

反応ノート

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