Diisopropylethylamine → tert-butyl ((S)-2-(4-chlorophenyl)-3-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)-3-oxopropyl)(isopropyl)carbamate

HRID 1746957Notes

Reaction equation

HRID 1746957 reaction equation
Cl.Cl.[CH3:3][C@H:4]1[C:12]2[C:11]([N:13]3[CH2:18][CH2:17][NH:16][CH2:15][CH2:14]3)=[N:10][CH:9]=[N:8][C:7]=2[C@H:6]([OH:19])[CH2:5]1.[C:20]([O:24][C:25]([N:27]([CH:40]([CH3:42])[CH3:41])[CH2:28][C@H:29]([C:33]1[CH:38]=[CH:37][C:36]([Cl:39])=[CH:35][CH:34]=1)[C:30](O)=[O:31])=[O:26])([CH3:23])([CH3:22])[CH3:21].CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>C(Cl)Cl>[Cl:39][C:36]1[CH:37]=[CH:38][C:33]([C@H:29]([C:30]([N:16]2[CH2:15][CH2:14][N:13]([C:11]3[C:12]4[C@H:4]([CH3:3])[CH2:5][C@@H:6]([OH:19])[C:7]=4[N:8]=[CH:9][N:10]=3)[CH2:18][CH2:17]2)=[O:31])[CH2:28][N:27]([CH:40]([CH3:41])[CH3:42])[C:25](=[O:26])[O:24][C:20]([CH3:22])([CH3:21])[CH3:23])=[CH:34][CH:35]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 59564929(2S)-3-[tert-butoxycarbonyl(isopropyl)amino]-2-(4-chlorophenyl)propanoic acidHCID 66618034(5R,7R)-5-methyl-4-(piperazin-1-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-ol dihydrochloride

Product 1

HCID 66618379tert-butyl ((S)-2-(4-chlorophenyl)-3-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)-3-oxopropyl)(isopropyl)carbamateYield 69.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of (5R,7R)-5-methyl-4-(piperazin-1-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-ol dihydrochloride (2.92 g, 9.51 mmol) and (S)-3-(tert-butoxycarbonyl(isopropyl)amino)-2-(4-chlorophenyl)propanoic acid (3.25 g, 9.51 mmol) in DCM (40 mL) and DIEA (5.0 mL, 28.7 mmol) was stirred at room temperature for 10 minutes. HBTU (3.61 g, 9.51 mmol) was added to the mixture. The mixture was stirred at room temperature for 1 hour. The solvent was removed, and the residue was dissolved in ethyl acetate (500 mL) and washed with water (6×100 mL). The organic phase was dried and concentrated. The residue was subject to column chromatography, eluted by EtOAc-DCM/MeOH (20:1) to give tert-butyl (S)-2-(4-chlorophenyl)-3-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)-3-oxopropyl(isopropyl)carbamate (3.68 g, 69%.) LC/MS (APCI+) m/z 558.2 [M+H]+.

Workup

  1. customThe solvent was removed
  2. dissolutionthe residue was dissolved in ethyl acetate (500 mL)
  3. washwashed with water (6×100 mL)
  4. customThe organic phase was dried
  5. concentrationconcentrated
  6. washeluted by EtOAc-DCM/MeOH (20:1)

Sources & evidence

ORD record
ord-e58a7ab1892d40b691509c573702b454
Source dataset
uspto-grants-2015_10
Patent number
US09150549B2

Reaction notes

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