Diethyl Ether → HCID 13652717, compound

HRID 649391Notes

Reaction equation

HRID 649391 reaction equation
C(OC([N:11]1[CH2:16][CH2:15][CH:14]([CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][C@@H:22]([NH:28][C@@H:29]2[C:35](=[O:36])[N:34]([CH2:37][C:38]([O:40]C(C)(C)C)=[O:39])[C:33]3[CH:45]=[CH:46][CH:47]=[CH:48][C:32]=3[S:31][CH2:30]2)[C:23]([O:25]CC)=[O:24])[CH2:13][CH2:12]1)=O)C1C=CC=CC=1.Br.C(O)(=O)C.C(OCC)C>C(O)(=O)C>[C:23]([C@H:22]([NH:28][C@@H:29]1[C:35](=[O:36])[N:34]([CH2:37][C:38]([OH:40])=[O:39])[C:33]2[CH:45]=[CH:46][CH:47]=[CH:48][C:32]=2[S:31][CH2:30]1)[CH2:21][CH2:20][CH2:19][CH2:18][CH2:17][CH:14]1[CH2:15][CH2:16][NH:11][CH2:12][CH2:13]1)([OH:25])=[O:24]

Participants

5

Reactant 3

HCID 3283Diethyl EtherHCID 21893785Acetic Acid Mixture with Hydrobromic AcidHCID 54502284HCID 54502284, compound

Product 1

HCID 13652717HCID 13652717, compoundYield 67.7%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

In 1 ml of acetic acid is dissolved 0.5 g of tert-butyl 3(R)-[6-(1-benzyloxycarbonyl-4-piperidyl)-1(R)-ethoxycarbonylhexyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetate, and 2 ml of 30% hydrogen bromide-acetic acid solution is added to the solution, followed by allowing the mixture to stand at room temperature for 1 hour. Ethyl ether (200 ml) is added to the reaction solution, which is then allowed to stand. The supernatant liquid is decanted, and the precipitate is dissolved in 20 ml of 1N aqueous sodium hydroxide solution, followed by allowing the solution to stand at room temperature for 30 minutes. The solution is neutralized by adding 2 ml of acetic acid, and purified by MCI-gel column chromatography (water:methanol=1:2). The eluent is concentrated under reduced pressure, and the residue is lyophilized to give 0.23 g of 3(R)-[1(R)-carboxy-6-(4-piperidyl)hexyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetic acid as a colorless powder.

Workup

  1. additionis added to the solution
  2. customThe supernatant liquid is decanted
  3. dissolutionthe precipitate is dissolved in 20 ml of 1N aqueous sodium hydroxide solution
  4. waitto stand at room temperature for 30 minutes
  5. additionby adding 2 ml of acetic acid
  6. custompurified by MCI-gel column chromatography (water:methanol=1:2)
  7. concentrationThe eluent is concentrated under reduced pressure

Sources & evidence

ORD record
ord-fff2f24de56147f8b30c8811755c4b08
Source dataset
uspto-grants-1988_04
Patent number
US04739066

Reaction notes

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