Hydrochloric Acid → (1R,5S,6S)-2-[(2S,4S)-2-(4-Methyl-1-piperazinylcarbonyl)-1-methylpyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylic Acid Hydrochloride

HRID 727613Notes

Reaction equation

HRID 727613 reaction equation
[CH3:1][N:2]1[CH2:7][CH2:6][N:5]([C:8]([C@@H:10]2[CH2:14][C@H:13]([S:15][C:16]3[C@H:17]([CH3:40])[C@@H:18]4[C@@H:35]([C@H:36]([OH:38])[CH3:37])[C:34](=[O:39])[N:19]4[C:20]=3[C:21]([O:23]CC3C=CC([N+]([O-])=O)=CC=3)=[O:22])[CH2:12][N:11]2[CH3:41])=[O:9])[CH2:4][CH2:3]1.O1CCCC1.[ClH:47]>O>[ClH:47].[CH3:1][N:2]1[CH2:3][CH2:4][N:5]([C:8]([C@@H:10]2[CH2:14][C@H:13]([S:15][C:16]3[C@H:17]([CH3:40])[C@@H:18]4[C@@H:35]([C@H:36]([OH:38])[CH3:37])[C:34](=[O:39])[N:19]4[C:20]=3[C:21]([OH:23])=[O:22])[CH2:12][N:11]2[CH3:41])=[O:9])[CH2:6][CH2:7]1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 1317204284-Nitrobenzyl (1R,5S,6S)-2-[(2S,4S)-2-(4-methyl-1-piperazinylcarbonyl)-1-methylpyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylate

Product 1

HCID 67618029(1R,5S,6S)-2-[(2S,4S)-2-(4-Methyl-1-piperazinylcarbonyl)-1-methylpyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylic Acid Hydrochloride

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A solution of 720 mg of 4-nitrobenzyl (1R, 5S,6S)-2-[(2S,4S)-2-(4-methyl-1-piperazinylcarbonyl)-1-methylpyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylate [prepared as described in step (a) above] in 60 ml of a 1:1 by volume mixture of tetrahydrofuran and water was mixed with 1.2 ml of 1N aqueous hydrochloric acid, and the mixture was hydrogenated by bubbling hydrogen through it at room temperature for 2 hours in the presence of 800 mg of 10% w/w palladium-on-charcoal. The catalyst was then removed by filtration and the filtrate was washed with diethyl ether. The aqueous solution was concentrated by evaporation under reduced pressure, the residue was subjected to column chromatography using a Lobar column (Merck, LiChroprep RP-8, size B) and the column was eluted with 3% by volume aqueous methanol. Those fractions containing the title compound were combined and concentrated by evaporation under reduced pressure, to give 326 mg of the title compound as a colorless powder.

Workup

  1. customby bubbling hydrogen through it at room temperature for 2 hours in the presence of 800 mg of 10% w/w palladium-on-charcoal
  2. customThe catalyst was then removed by filtration
  3. washthe filtrate was washed with diethyl ether
  4. concentrationThe aqueous solution was concentrated by evaporation under reduced pressure
  5. washthe column was eluted with 3% by volume aqueous methanol
  6. additionThose fractions containing the title compound
  7. concentrationconcentrated by evaporation under reduced pressure

Sources & evidence

ORD record
ord-f72ae96d9a484d528b8bc2813cd98001
Source dataset
uspto-grants-1998_01
Patent number
US05712267

Reaction notes

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