1,4-Dioxane → (S)-2-(4-oxo-8-(4-oxo-4-phenylbutyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)-2-phenylacetic acid

HRID 1751111Notes

Reaction equation

HRID 1751111 reaction equation
[O:1]=[C:2]1[C:6]2([CH2:11][CH2:10][N:9]([CH2:12][CH2:13][CH2:14]N3C4C(=CC=CC=4)CC3=O)[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:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1)[C:32]([O:34]C(C)(C)C)=[O:33].[O:45]1[CH2:50][CH2:49]OCC1>Cl>[O:1]=[C:2]1[C:6]2([CH2:7][CH2:8][N:9]([CH2:12][CH2:13][CH2:14][C:50](=[O:45])[C:49]3[CH:10]=[CH:11][CH:6]=[CH:7][CH:8]=3)[CH2:10][CH2:11]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:39]1[CH:40]=[CH:41][CH:42]=[CH:43][CH:44]=1)[C:32]([OH:34])=[O:33]

Participants

4

Reactant 2

HCID 312751,4-DioxaneHCID 58046777(R)-tert-butyl 2-(4-oxo-8-(3-(2-oxoindolin-1-yl)propyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)-2-phenylacetate

Product 1

HCID 54772217(S)-2-(4-oxo-8-(4-oxo-4-phenylbutyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)-2-phenylacetic acidYield 28%

Reagents, catalysts & solvents 1

HCID 313Hydrochloric AcidSolvent

Procedure

A solution of (R)-tert-butyl 2-(4-oxo-8-(3-(2-oxoindolin-1-yl)propyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)-2-phenylacetate (257 mg, 0.453 mmol, 1 equiv) in 4M hydrogen chloride solution in dioxane was stirred at ambient temperature for 5 h. The mixture was concentrated in vacuo and purified using preparative thin layer chromatography in 10% methanol in dichloromethane. The pure extract was treated with 4M hydrogen chloride solution in dioxane to afford the hydrogen chloride salt of the title compound as a cream powder (100 mg, 28%); 1H NMR (400 MHz, DMSO-d6): δ 1.88 (m, 2H); 2.05-2.09 (m, 2H); 2.85 (m, 2H); 3.15-3.24 (m, 2H); 3.56-3.59 (m, 4H); 4.19 (d, 1H, J=4.4 Hz); 4.89 (d, 1H, J=4.8 Hz); 5.81 (s, 1H); 6.84 (m, 1H); 6.99 (d, 2H, J=8.4 Hz); 7.23 (t, 2H, J=7.6 and 8.4 Hz); 7.45-7.47 (m, 5H); 7.55 (t, 2H, J=7.6 and 8 Hz); 7.64-7.68 (m, 1H); 7.98-8.01 (m, 2H); 10.4 (bs, 1H); 13.5 (bs, 1H); MS for C31H33N3O4 m/z 512.4 (M+H)+.

Workup

  1. concentrationThe mixture was concentrated in vacuo
  2. custompurified
  3. extractionThe pure extract
  4. additionwas treated with 4M hydrogen chloride solution in dioxane

Sources & evidence

ORD record
ord-18bda502a504455f948d246b50a7012d
Source dataset
uspto-grants-2015_10
Patent number
US09156840B2

Reaction notes

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