Methanol → (R)-2-(4-oxo-8-(3-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)-2-phenylacetic acid

HRID 1750978Notes

Reaction equation

HRID 1750978 reaction equation
[O:1]=[C:2]1[C:6]2([CH2:11][CH2:10][N:9]([CH2:12][CH2:13][CH2:14][N:15]3[C:19]4[CH:20]=[CH:21][CH:22]=[CH:23][C:18]=4[NH:17][C:16]3=[O:24])[CH2:8][CH2:7]2)[N:5]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[CH2:4][N:3]1[C@H:31]([C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)[C:32]([O:34]C)=[O:33].[OH-].[Li+].CO>O>[O:1]=[C:2]1[C:6]2([CH2:11][CH2:10][N:9]([CH2:12][CH2:13][CH2:14][N:15]3[C:19]4[CH:20]=[CH:21][CH:22]=[CH:23][C:18]=4[NH:17][C:16]3=[O:24])[CH2:8][CH2:7]2)[N:5]([C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)[CH2:4][N:3]1[C@H:31]([C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)[C:32]([OH:34])=[O:33]

Participants

5

Reactant 3

HCID 887MethanolHCID 3939Lithium HydroxideHCID 66652206(R)-methyl 2-(4-oxo-8-(3-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)-2-phenylacetate

Product 1

HCID 54771529(R)-2-(4-oxo-8-(3-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)-2-phenylacetic acidYield 20.6%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A solution of (R)-methyl 2-(4-oxo-8-(3-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)-2-phenylacetate (105 mg, 0.189 mmol, 1 equiv) and lithium hydroxide (15.9 mg, 0.38 mmol, 2.0 equiv) in a 3:1 mixture of methanol and water (5 ml t/v) was stirred at ambient temperature for 24 hrs. The reaction was concentrated in vacuo and purified using preparatory high performance liquid chromatography. The combined pure fractions were lyophilized to afford the acetate salt of the title compound as a white solid (21 mg, 20%); 1H NMR (400 MHz, DMSO-d6): δ 1.57-1.66 (m, 2H), 1.87-1.91 (m, 2H); 2.79-2.85 (m, 4H); 3.27-3.42 (bs, 4H); 3.85 (t, 2H, J=6.8 Hz); 4.11 (d, 1H, J=4.8 Hz); 4.91 (d, 1H, J=4.8 Hz); 5.71 (s, 1H); 6.76-6.82 (m, 3H); 6.97-6.98 (m, 3H); 7.17-7.23 (m, 3H); 7.35-7.43 (m, 5H); 10.83 (s, 1H); 12.5 (bs, 1H); MS for C31H33ClN5O4 540.01 (M+H)+.

Workup

  1. concentrationThe reaction was concentrated in vacuo
  2. custompurified

Sources & evidence

ORD record
ord-70893c5e54b84af885063fa5a5b57e4b
Source dataset
uspto-grants-2015_10
Patent number
US09156840B2

Reaction notes

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