(R)-benzyl 3-(4-butoxy-4-oxobutanamido)-4-(3'-chlorobiphenyl-4-yl)butanoate → HCID 59607872, compound

HRID 1945008Notes

Reaction equation

HRID 1945008 reaction equation
[CH2:1]([O:5][C:6](=[O:38])[CH2:7][CH2:8][C:9]([NH:11][C@H:12]([CH2:24][C:25]1[CH:30]=[CH:29][C:28]([C:31]2[CH:36]=[CH:35][CH:34]=[C:33]([Cl:37])[CH:32]=2)=[CH:27][CH:26]=1)[CH2:13][C:14]([O:16]CC1C=CC=CC=1)=[O:15])=[O:10])[CH2:2][CH2:3][CH3:4]>CCOC(C)=O.[Pd]>[CH2:1]([O:5][C:6](=[O:38])[CH2:7][CH2:8][C:9]([NH:11][C@H:12]([CH2:24][C:25]1[CH:30]=[CH:29][C:28]([C:31]2[CH:36]=[CH:35][CH:34]=[C:33]([Cl:37])[CH:32]=2)=[CH:27][CH:26]=1)[CH2:13][C:14]([OH:16])=[O:15])=[O:10])[CH2:2][CH2:3][CH3:4]

Participants

4

Reactant 1

HCID 59607868(R)-benzyl 3-(4-butoxy-4-oxobutanamido)-4-(3'-chlorobiphenyl-4-yl)butanoate

Product 1

HCID 59607872HCID 59607872, compoundYield 60.9%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

A suspension of (R)-benzyl 3-(4-butoxy-4-oxobutanamido)-4-(3′-chlorobiphenyl-4-yl)butanoate (178.9 mg, 0.334 mmol) and Pd/C (71.0 mg, 0.033 mmol) in EtOAc (3 ml) is allowed to stir under hydrogen at room temperature for 1.5 hours. The reaction mixture is filtered, and concentrated to give crude. The resulting residue is purified by preparative HPLC using a gradient of 20% MeCN/water (0.1% TFA) to 100% MeCN to give (R)-3-(4-butoxy-4-oxobutanamido)-4-(3′-chlorobiphenyl-4-yl)butanoic acid (90.7 mg) as a white solid; HPLC retention time=1.27 minutes (condition B); MS (m+1)=446.24; 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 0.91 (t, J=7.5 Hz, 3H) 1.31-1.40 (m, 2H) 1.55-1.62 (m, 2H) 2.43-2.47 (m, 2H) 2.52-2.69 (m, 4H) 2.93 (A of ABX, Jab=3.7 Hz, Jax=7.7 Hz, 1H) 3.00 (B of ABX, Jab=13.7 Hz, Jbx=6.8 Hz, 1H) 4.07 (t, J=6.7 Hz, 2H) 4.49-4.57 (m, 1H) 6.31 (br d, J=8.6 Hz, 1H) 7.26-7.37 (m, 4H) 7.43-7.46 (m, 1H) 7.49-7.52 (m, 2H) 7.55 (br t, J=1.8 Hz, 1H).

Workup

  1. filtrationThe reaction mixture is filtered
  2. concentrationconcentrated
  3. customto give crude
  4. customThe resulting residue is purified by preparative HPLC

Sources & evidence

ORD record
ord-e8d7465e0f954e3f83ab808f45ecb585
Source dataset
uspto-grants-2013_03
Patent number
US08394853B2

Reaction notes

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