3(R)-amino-2,3-dihydro-1,5(5H)-benzothiazepin-4-one → 3(R)-[5-(1-benzyloxycarbonyl-4-piperidyl)-1-ethoxycarbonylpentyl]amino-2,3-dihydro-1,5(5H)-benzothiazepin-4-one

HRID 649413Notes

Reaction equation

HRID 649413 reaction equation
[NH2:1][C@@H:2]1[C:8](=[O:9])[NH:7][C:6]2[CH:10]=[CH:11][CH:12]=[CH:13][C:5]=2[S:4][CH2:3]1.[CH2:14]([O:21][C:22]([N:24]1[CH2:29][CH2:28][CH:27]([CH2:30][CH2:31][CH2:32][CH2:33][CH:34](OS(C)(=O)=O)[C:35]([O:37][CH2:38][CH3:39])=[O:36])[CH2:26][CH2:25]1)=[O:23])[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1>C(OC(=O)C)C>[CH2:14]([O:21][C:22]([N:24]1[CH2:25][CH2:26][CH:27]([CH2:30][CH2:31][CH2:32][CH2:33][CH:34]([NH:1][C@@H:2]2[C:8](=[O:9])[NH:7][C:6]3[CH:10]=[CH:11][CH:12]=[CH:13][C:5]=3[S:4][CH2:3]2)[C:35]([O:37][CH2:38][CH3:39])=[O:36])[CH2:28][CH2:29]1)=[O:23])[C:15]1[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=1

Participants

4

Reactant 2

HCID 133751443(R)-amino-2,3-dihydro-1,5(5H)-benzothiazepin-4-oneHCID 13652732Ethyl 6-(1-benzyloxycarbonyl-4-piperidyl)-2-methanesulfonyloxyhexanoate

Product 1

HCID 704162703(R)-[5-(1-benzyloxycarbonyl-4-piperidyl)-1-ethoxycarbonylpentyl]amino-2,3-dihydro-1,5(5H)-benzothiazepin-4-oneYield 44.2%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 3(R)-amino-2,3-dihydro-1,5(5H)-benzothiazepin-4-one (2.7 g) and ethyl 6-(1-benzyloxycarbonyl-4-piperidyl)-2-methanesulfonyloxyhexanoate (5.4 g) is heated at 100°-130° C. for 3 hours. After cooling, the mixture is dissolved in ethylacetate (200 ml) and the solution is washed with water, dried over anhydrous magnesium sulfate and concentrated in vacuo. The residue is purified by silica gel column chromatography (hexane:ethyl acetate=2:1) to give 3(R)-[5-(1-benzyloxycarbonyl-4-piperidyl)-1-ethoxycarbonylpentyl]amino-2,3-dihydro-1,5(5H)-benzothiazepin-4-one (2.9 g) as a colorless oil.

Workup

  1. temperatureis heated at 100°-130° C. for 3 hours
  2. temperatureAfter cooling
  3. washthe solution is washed with water
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe residue is purified by silica gel column chromatography (hexane:ethyl acetate=2:1)

Sources & evidence

ORD record
ord-b3edba3aa446461aa2ce3ac5196558a6
Source dataset
uspto-grants-1988_04
Patent number
US04739066

Reaction notes

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