Piperidine → Tert-butyl (s)-1-((s)-1-((2s,4s)-4-amino-2-((r)-1,2,3,4-tetrahydronaphthalen-1-ylcarbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-ylamino)-1-oxopropan-2-yl(methyl)carbamate

HRID 527741Notes

Reaction equation

HRID 527741 reaction equation
C1C2C(COC([NH:18][C@@H:19]3[CH2:23][N:22]([C:24](=[O:44])[C@@H:25]([NH:30][C:31](=[O:43])[C@@H:32]([N:34]([CH3:42])[C:35](=[O:41])[O:36][C:37]([CH3:40])([CH3:39])[CH3:38])[CH3:33])[C:26]([CH3:29])([CH3:28])[CH3:27])[C@H:21]([C:45](=[O:57])[NH:46][C@H:47]4[C:56]5[C:51](=[CH:52][CH:53]=[CH:54][CH:55]=5)[CH2:50][CH2:49][CH2:48]4)[CH2:20]3)=O)C3C(=CC=CC=3)C=2C=CC=1.N1CCCCC1>C(Cl)Cl>[NH2:18][C@@H:19]1[CH2:23][N:22]([C:24](=[O:44])[C@@H:25]([NH:30][C:31](=[O:43])[C@@H:32]([N:34]([CH3:42])[C:35](=[O:41])[O:36][C:37]([CH3:38])([CH3:39])[CH3:40])[CH3:33])[C:26]([CH3:28])([CH3:29])[CH3:27])[C@H:21]([C:45](=[O:57])[NH:46][C@H:47]2[C:56]3[C:51](=[CH:52][CH:53]=[CH:54][CH:55]=3)[CH2:50][CH2:49][CH2:48]2)[CH2:20]1

Participants

4

Reactant 2

HCID 8082PiperidineHCID 57806842tert-Butyl ((S)-1-(((S)-1-((2S,4S)-4-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-yl)amino)-1-oxopropan-2-yl)(methyl)carbamate

Product 1

HCID 57806830Tert-butyl (s)-1-((s)-1-((2s,4s)-4-amino-2-((r)-1,2,3,4-tetrahydronaphthalen-1-ylcarbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-ylamino)-1-oxopropan-2-yl(methyl)carbamateYield 79.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of tert-butyl ((S)-1-(((S)-1-((2S,4S)-4-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-yl)amino)-1-oxopropan-2-yl)(methyl)carbamate (6.14 g, 7.87 mmol) in CH2Cl2 (40 mL) was added piperidine (4.67 mL, 47.2 mmol) dropwise. The reaction mixture was stirred at rt for 2 h and concentrated in vacuo. The residue was washed with methanol and the resulting solid was removed by filtration. The filtrate was concentrated in vacuo and purified by flash column chromatography (gradient elution from 0 to 10% MeOH/CH2Cl2) to give the title compound (3.48 g, 79%) as a light tan solid. MS(ESI+) m/z 558.4 (M+H)+.

Workup

  1. concentrationconcentrated in vacuo
  2. washThe residue was washed with methanol
  3. customthe resulting solid was removed by filtration
  4. concentrationThe filtrate was concentrated in vacuo
  5. custompurified by flash column chromatography (gradient elution from 0 to 10% MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-f707a097dd7b4a8386ee32e64150ea5b
Source dataset
uspto-grants-2016_05
Patent number
US09345740B2

Reaction notes

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