Diisopropylethylamine → 9H-9-fluorenylmethyl N-{2-[3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidino]-1,1-dimethyl-2-oxoethyl}-N-methylcarbamate

HRID 897901Notes

Reaction equation

HRID 897901 reaction equation
Cl.Cl.[I:3][C:4]1[C:12]2[C:7](=[N:8][CH:9]=[N:10][C:11]=2[NH2:13])[N:6]([CH:14]2[CH2:19][CH2:18][CH2:17][NH:16][CH2:15]2)[N:5]=1.[CH:20]1[C:32]2[CH:31]([CH2:33][O:34][C:35]([N:37]([CH3:44])[C:38]([CH3:43])([CH3:42])[C:39](O)=[O:40])=[O:36])[C:30]3[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=3)[C:24]=2[CH:23]=[CH:22][CH:21]=1.Cl.CN(C)CCCN=C=NCC.C(N(CC)C(C)C)(C)C.ON1C2N=CC=CC=2N=N1>ClCCl>[NH2:13][C:11]1[N:10]=[CH:9][N:8]=[C:7]2[N:6]([CH:14]3[CH2:19][CH2:18][CH2:17][N:16]([C:39](=[O:40])[C:38]([N:37]([CH3:44])[C:35](=[O:36])[O:34][CH2:33][CH:31]4[C:30]5[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=5[C:24]5[C:32]4=[CH:20][CH:21]=[CH:22][CH:23]=5)([CH3:43])[CH3:42])[CH2:15]3)[N:5]=[C:4]([I:3])[C:12]=12

Participants

7

Reactant 5

HCID 81531DiisopropylethylamineHCID 181649HOAtHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride2×HCID 4147680Fmoc-N-Me-Aib-OH2×HCID 223471203-iodo-1-(3-piperidyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine dihydrochloride

Product 1

HCID 223473249H-9-fluorenylmethyl N-{2-[3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidino]-1,1-dimethyl-2-oxoethyl}-N-methylcarbamateYield 11.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of 3-iodo-1-(3-piperidyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine dihydrochloride (0.17 g, 0.00042 mol), 2-[[(9H-9-fluorenylmethoxy)carbonyl]-(methyl)amino]-2-methylpropanoic acid (0.175 g, 0.00052 mol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.1 g, 0.00052 mol), N,N-diisopropylethylamine (0.23 g, 0.0018 mol) and 1-hydroxy-7-azabenzotriazole (0.057 g, 0.00042 mol) in anhydrous dichloromethane (7 mL) was stirred for 18 hours at room temperature. Additional 2-[[(9H-9-fluorenylmethoxy)carbonyl](methyl)amino]-2-methylpropanoic acid (0.044 g, 0.00013 mol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.025 g, 0.00013 mol) were added to the reaction and stirred for 16 hours. The solvent was removed under reduced pressure. The residue was partitioned between brine and ethyl acetate. The aqueous layer was extracted with ethyl acetate, and the combined organic solvent was removed under reduced pressure, and the residue was purified by RP-HPLC (Hypersilprep HS C18, 8 μm, 250×21.1 mm; 5%-100% over 20 min with 0.1 M ammonium acetate, 21 mL/min) to yield 9H-9-fluorenylmethyl N-{2-[3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidino]-1,1-dimethyl-2-oxoethyl}-N-methylcarbamate (0.030 g, 0.00005 mol).

Workup

  1. stirringstirred for 16 hours
  2. customThe solvent was removed under reduced pressure
  3. customThe residue was partitioned between brine and ethyl acetate
  4. extractionThe aqueous layer was extracted with ethyl acetate
  5. customthe combined organic solvent was removed under reduced pressure
  6. customthe residue was purified by RP-HPLC (Hypersilprep HS C18, 8 μm, 250×21.1 mm; 5%-100% over 20 min with 0.1 M ammonium acetate, 21 mL/min)

Sources & evidence

ORD record
ord-e927fdb9b120422d9ace040519e46d1e
Source dataset
uspto-grants-2005_07
Patent number
US06921763B2

Reaction notes

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