4-nitrobenzyl (1R, 5S, 6S)-2-[(2S, 4S)-2-[4-(N-4-nitrobenzyloxycarbonylacetimidoyl)piperazin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylate → (1R, 5S, 6S)-2-[(2S, 4S)-2-(4-Acetimidoylpiperazin-1-ylcarbonyl)pyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylic acid

HRID 727594Notes

Reaction equation

HRID 727594 reaction equation
[N+](C1C=CC(COC([N:12]=[C:13]([N:15]2[CH2:20][CH2:19][N:18]([C:21]([C@@H:23]3[CH2:27][C@H:26]([S:28][C:29]4[C@H:30]([CH3:53])[C@@H:31]5[C@@H:48]([C@H:49]([OH:51])[CH3:50])[C:47](=[O:52])[N:32]5[C:33]=4[C:34]([O:36]CC4C=CC([N+]([O-])=O)=CC=4)=[O:35])[CH2:25][N:24]3C(OCC3C=CC([N+]([O-])=O)=CC=3)=O)=[O:22])[CH2:17][CH2:16]2)[CH3:14])=O)=CC=1)([O-])=O>O1CCCC1.O>[C:13]([N:15]1[CH2:16][CH2:17][N:18]([C:21]([C@@H:23]2[CH2:27][C@H:26]([S:28][C:29]3[C@H:30]([CH3:53])[C@@H:31]4[C@@H:48]([C@H:49]([OH:51])[CH3:50])[C:47](=[O:52])[N:32]4[C:33]=3[C:34]([OH:36])=[O:35])[CH2:25][NH:24]2)=[O:22])[CH2:19][CH2:20]1)(=[NH:12])[CH3:14]

Participants

4

Reactant 1

HCID 1317204064-nitrobenzyl (1R, 5S, 6S)-2-[(2S, 4S)-2-[4-(N-4-nitrobenzyloxycarbonylacetimidoyl)piperazin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylate

Product 1

HCID 9956142(1R, 5S, 6S)-2-[(2S, 4S)-2-(4-Acetimidoylpiperazin-1-ylcarbonyl)pyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylic acidYield 38%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

5.10 g of 4-nitrobenzyl (1R, 5S, 6S)-2-{(2S, 4S)-2-[4-(N-4-nitrobenzyloxycarbonylacetimidoyl)piperazin-1-ylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidin-4-ylthio}-6-[(1R)-1-hydroxyethyl]-1-methyl-1-carbapen-2-em-3-carboxylate [prepared as described in step (a) above] were dissolved in 100 ml of a 6:4 by volume mixture of tetrahydrofuran and water, and the mixture was hydrogenated by bubbling hydrogen through it at room temperature for 2.5 hours in the presence of 5.0 g of 10% w/w palladium-on-charcoal. The catalyst was filtered off, and the filtrate was washed with diethyl ether and then concentrated by evaporation under reduced pressure. The resulting residue was purified by reverse phase column chromatography through 250 ml of Cosmo Sil 75C18 -PREP (a trade mark for a product of Nacalai Tesque), using water, 5% v/v aqueous acetonitrile and 7% v/v aqueous acetonitrile, in that order, as the eluent. Those fractions containing the title compound were combined, concentrated by evaporation under reduced pressure and lyophilized to give 940 mg of the title compound, as a powder.

Workup

  1. customby bubbling hydrogen through it at room temperature for 2.5 hours in the presence of 5.0 g of 10% w/w palladium-on-charcoal
  2. filtrationThe catalyst was filtered off
  3. washthe filtrate was washed with diethyl ether
  4. concentrationconcentrated by evaporation under reduced pressure
  5. customThe resulting residue was purified by reverse phase column chromatography through 250 ml of Cosmo Sil 75C18 -PREP (a trade mark for a product of Nacalai Tesque),
  6. additionThose fractions containing the title compound
  7. concentrationconcentrated by evaporation under reduced pressure

Sources & evidence

ORD record
ord-4a16577d411e4cd89b4714b6a41fbbcd
Source dataset
uspto-grants-1998_01
Patent number
US05712267

Reaction notes

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