benzyl 3(S)-[5-(1-benzyloxycarbonyl-4-piperidyl)-1(R)-ethoxycarbonylpentyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetate → 3(S)-[1(R)-carboxy-5-(4-piperidyl)pentyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetic acid

HRID 280962ノート

反応式

HRID 280962 の反応式
C(OC([N:11]1[CH2:16][CH2:15][CH:14]([CH2:17][CH2:18][CH2:19][CH2:20][C@@H:21]([NH:27][C@@H:28]2[C:34](=[O:35])[N:33]([CH2:36][C:37]([O:39]CC3C=CC=CC=3)=[O:38])[C:32]3[CH:47]=[CH:48][CH:49]=[CH:50][C:31]=3[O:30][CH2:29]2)[C:22]([O:24]CC)=[O:23])[CH2:13][CH2:12]1)=O)C1C=CC=CC=1>C(O)C.[C].[Pd]>[C:22]([C@H:21]([NH:27][C@@H:28]1[C:34](=[O:35])[N:33]([CH2:36][C:37]([OH:39])=[O:38])[C:32]2[CH:47]=[CH:48][CH:49]=[CH:50][C:31]=2[O:30][CH2:29]1)[CH2:20][CH2:19][CH2:18][CH2:17][CH:14]1[CH2:15][CH2:16][NH:11][CH2:12][CH2:13]1)([OH:24])=[O:23]

参加物

4

反応物 1

HCID 53783607benzyl 3(S)-[5-(1-benzyloxycarbonyl-4-piperidyl)-1(R)-ethoxycarbonylpentyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetate

生成物 1

HCID 539058083(S)-[1(R)-carboxy-5-(4-piperidyl)pentyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetic acid収率 67.8%

試薬・触媒・溶媒 2

HCID 178418390HCID 178418390、化合物触媒HCID 702Ethanol溶媒

実験手順

A solution of benzyl 3(S)-[5-(1-benzyloxycarbonyl-4-piperidyl)-1(R)-ethoxycarbonylpentyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetate (0.35 g) in ethanol (20 ml) is subjected to catalytic hydrogenolysis over 10% palladium carbon (0.5 g, 50% wet) at ambient temperature and pressure until the absorption of hydrogen ceases. After removal of the catalyst by filtration, the filtrate is concentrated. To the residue is added 5N hydrogen chloride-ethyl acetate solution (1 ml), and the resulting mixture is diluted with ethyl ether (50 ml) to deposit 3(S)-[1(R)-ethoxycarbonyl-5-(4-piperidyl)pentyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetic acid dihydrochloride (0.25 g) as the colorless precipitate. This acid is dissolved in 1N sodium hydroxide solution (10 ml), and the resulting solution is allowed to stand for 30 minutes at room temperature. After addition of acetic acid (2 ml), the mixture is subjected to MCI gel column chromatography using water-methanol (2:1) as an eluent. The eluate is concentrated in vacuo and lyophilized to yield 3(S)-[1(R)-carboxy-5-(4-piperidyl)pentyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetic acid (0.15 g) as colorless powder.

後処理

  1. custompressure until the absorption of hydrogen ceases
  2. customAfter removal of the catalyst
  3. filtrationby filtration
  4. concentrationthe filtrate is concentrated
  5. additionTo the residue is added 5N hydrogen chloride-ethyl acetate solution (1 ml)
  6. additionthe resulting mixture is diluted with ethyl ether (50 ml)
  7. dissolutionThis acid is dissolved in 1N sodium hydroxide solution (10 ml)
  8. additionAfter addition of acetic acid (2 ml)
  9. concentrationThe eluate is concentrated in vacuo

出典と根拠

ORDレコード
ord-167956a8ae724664a97c46fbdcd128ba
出典データセット
uspto-grants-1986_05
特許番号
US04591458

反応ノート

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