3-Pentanamine → {(1S,4R)-4-[2-Chloro-6-(1-ethyl-propylamino)-purin-9-yl]-cyclopent-2-enyl}-propionyl-carbamic acid tert-butyl ester

HRID 215850Notes

Reaction equation

[C:1]([O:5][C:6](=[O:28])[N:7]([C@H:12]1[CH2:16][C@@H:15]([N:17]2[CH:25]=[N:24][C:23]3[C:18]2=[N:19][C:20]([Cl:27])=[N:21][C:22]=3Cl)[CH:14]=[CH:13]1)[C:8](=[O:11])[CH2:9][CH3:10])([CH3:4])([CH3:3])[CH3:2].[CH3:29][CH2:30][CH:31]([NH2:34])[CH2:32][CH3:33]>C1COCC1>[C:1]([O:5][C:6](=[O:28])[N:7]([C@H:12]1[CH2:16][C@@H:15]([N:17]2[CH:25]=[N:24][C:23]3[C:18]2=[N:19][C:20]([Cl:27])=[N:21][C:22]=3[NH:34][CH:31]([CH2:32][CH3:33])[CH2:30][CH3:29])[CH:14]=[CH:13]1)[C:8](=[O:11])[CH2:9][CH3:10])([CH3:3])([CH3:4])[CH3:2]

Participants

Conditions

Temperature: 50 °C

Procedure

[(1S,4R)-4-(2,6-Dichloro-purin-9-yl)-cyclopent-2-enyl]-propionyl-carbamic acid tert-butyl ester (700 mg, 1.64 mmol) is dissolved in THF (15 mL) under an atmosphere of argon. 3-Pentylamine (315 mg, 3.61 mmol) is added and the reaction mixture is stirred at 50° C. The reaction is shown to be complete by LCMS after 18 hours. The reaction mixture is partitioned between DCM (50 mL) and 0.1 M HCl (50 mL). The organic layer is washed with water (20 mL) and brine (20 mL), dried over MgSO4, filtered and the solvent is removed in vacuo to give the title compound.

Workup

customThe reaction mixture is partitioned between DCM (50 mL) and 0.1 M HCl (50 mL)
washThe organic layer is washed with water (20 mL) and brine (20 mL)
dry with materialdried over MgSO4
filtrationfiltered
customthe solvent is removed in vacuo

Sources & evidence

ORD record: ord-f716b118d60d46218329522b6fe4afe7
Source dataset: uspto-grants-2012_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08193164B2

Reaction notes

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