Diethyl Ether → HCID 13652718, compound

HRID 980602Notes

Reaction equation

HRID 980602 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 54502285HCID 54502285, compound

Product 1

HCID 13652718HCID 13652718, compoundYield 70.3%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

In 1 ml of acetic acid is dissolved 0.9 g of tert-butyl 3(R)-[6-(1-benzyloxycarbonyl-4-piperidyl)-1(S)-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 1.5 hours. Ethyl ether (200 ml) is added to the reaction solution, which is then allowed to stand. The supenatant liquid is decanted, and the precipitate is dissolved in 30 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 3 ml of acetic acid, and purified by MCI-gel chromatography (water:methanol=1:2). The eluent is ccncentrated under reduced pressure, and the residue is lyophilized to give 0.43 g of 3(R)-[1(S)-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 supenatant liquid is decanted
  3. dissolutionthe precipitate is dissolved in 30 ml of 1N aqueous sodium hydroxide solution
  4. waitto stand at room temperature for 30 minutes
  5. additionby adding 3 ml of acetic acid
  6. custompurified by MCI-gel chromatography (water:methanol=1:2)

Sources & evidence

ORD record
ord-a969babf78ad4684bf202fd535d56212
Source dataset
uspto-grants-1987_01
Patent number
US04638000

Reaction notes

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