4-Methylmorpholine → {1-[2-[2-Cyclopropylmethyl-4-(1-methylcarbamoyl-2-naphthalen-2-yl-ethyl)-3-oxo-piperazin-1-yl]-1-(4-fluorobenzyl)-2-oxo-ethylcarbamoyl]-1-methyl-ethyl}-carbamic acid tert-butyl ester

HRID 720171Notes

Reaction equation

HRID 720171 reaction equation
[NH2:1][CH:2]([CH2:32][C:33]1[CH:38]=[CH:37][C:36]([F:39])=[CH:35][CH:34]=1)[C:3]([N:5]1[CH2:10][CH2:9][N:8]([CH:11]([CH2:16][C:17]2[CH:26]=[CH:25][C:24]3[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=3)[CH:18]=2)[C:12]([NH:14][CH3:15])=[O:13])[C:7](=[O:27])[CH:6]1[CH2:28][CH:29]1[CH2:31][CH2:30]1)=[O:4].[C:40]([O:44][C:45]([NH:47][C:48]([CH3:53])([CH3:52])[C:49](O)=[O:50])=[O:46])([CH3:43])([CH3:42])[CH3:41].ON1C2C=CC=CC=2N=N1.CN1CCOCC1.CN(C)CCCN=C=NCC>CN(C=O)C>[C:40]([O:44][C:45](=[O:46])[NH:47][C:48]([C:49](=[O:50])[NH:1][CH:2]([CH2:32][C:33]1[CH:38]=[CH:37][C:36]([F:39])=[CH:35][CH:34]=1)[C:3]([N:5]1[CH2:10][CH2:9][N:8]([CH:11]([C:12](=[O:13])[NH:14][CH3:15])[CH2:16][C:17]2[CH:26]=[CH:25][C:24]3[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=3)[CH:18]=2)[C:7](=[O:27])[CH:6]1[CH2:28][CH:29]1[CH2:31][CH2:30]1)=[O:4])([CH3:53])[CH3:52])([CH3:43])([CH3:41])[CH3:42]

Participants

7

Reactant 5

HCID 79724-MethylmorpholineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 2733845N-((1,1-dimethylethoxy)carbonyl)-2-methyl-alanineHCID 102564532-[4-[2-amino-3-(4-fluorophenyl)-propionyl]-3-cyclopropylmethyl-2-oxo-piperazin-1-yl}-N-methyl-3-naphthalen-2-yl-propionamide

Product 1

HCID 69588085{1-[2-[2-Cyclopropylmethyl-4-(1-methylcarbamoyl-2-naphthalen-2-yl-ethyl)-3-oxo-piperazin-1-yl]-1-(4-fluorobenzyl)-2-oxo-ethylcarbamoyl]-1-methyl-ethyl}-carbamic acid tert-butyl esterYield 93%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-{4-[2-amino-3-(4-fluorophenyl)-propionyl]-3-cyclopropylmethyl-2-oxo-piperazin-1-yl}-N-methyl-3-naphthalen-2-yl-propionamide, 18, (44 mg, 0.068 mmol) in DMF (1 mL) are added 2-tert-butoxycarbonylamino-2-methyl-propionic acid (44 mg, 0.079 mmol), 1-hydroxybenzotriazole (20 mg, 0.148 mmol), N-methylmorpholine (41 mg, 0.41 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (16 mg, 0.083 mmol) consecutively. The reaction mixture is stirred for 3 hours, quenched with aqueous NH4Cl and extracted several times with ethyl acetate. The combined extracts are dried over Na2SO4, filtered and concentrated in vacuo to a residue which is purified over silica gel (CH2Cl2/CH3OH, 13:1) to afford 45 mg (93% yield) of the desired product. MS (ESMS) m/z 716.3 (M+H)+.

Workup

  1. customquenched with aqueous NH4Cl
  2. extractionextracted several times with ethyl acetate
  3. dry with materialThe combined extracts are dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo to a residue which
  6. customis purified over silica gel (CH2Cl2/CH3OH, 13:1)

Sources & evidence

ORD record
ord-3d21fc69a83347a5b7832dc721932933
Source dataset
uspto-grants-2006_11
Patent number
US07132539B2

Reaction notes

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