Diisopropylamine → N-[(1S,2R,3S,4R)-4-[2-Chloro-6-(2,2-diphenyl-ethylamino)-purin-9-yl]-2,3-dihydroxy-cyclopentyl]-propionamide

HRID 1696987Notes

Reaction equation

[Cl:1][C:2]1[N:10]=[C:9]2[C:5]([N:6]=[CH:7][N:8]2[C@@H:11]2[CH2:15][C@H:14]([NH:16][C:17](=[O:20])[CH2:18][CH3:19])[C@@H:13]([OH:21])[C@H:12]2[OH:22])=[C:4](Cl)[N:3]=1.C(NC(C)C)(C)C.[C:31]1([CH:37]([C:40]2[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=2)[CH2:38][NH2:39])[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1>C1COCC1>[Cl:1][C:2]1[N:10]=[C:9]2[C:5]([N:6]=[CH:7][N:8]2[C@@H:11]2[CH2:15][C@H:14]([NH:16][C:17](=[O:20])[CH2:18][CH3:19])[C@@H:13]([OH:21])[C@H:12]2[OH:22])=[C:4]([NH:39][CH2:38][CH:37]([C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)[C:40]2[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=2)[N:3]=1

Participants

Conditions

Temperature: 50 °C

Procedure

N-[(1S,2R,3S,4R)-4-(2,6-Dichloro-purin-9-yl)-2,3-dihydroxy-cyclopentyl]-propionamide (160) mg, 0.44 mmol) is dissolved in THF (5 ml) under an atmosphere of argon. Diisopropylamine (69 mg, 0.53 mmol) is added followed by 2,2-diphenylethylamine (96 mg, 0.49 mmol) and the reaction mixture is stirred at 50° C. The reaction is shown to be complete by LCMS after 2 hours. The solvent is removed in vacuo and the title compound is obtained after purification by reverse phase column chromatography (Isolute™ C18, 0-100% acetonitrile in water—0.1% TFA).). 1H nmr (MeOD, 400 MHz); 8.00(s, 1H), 7.40-7.15(m, 10H), 4.75(m, 1H), 4.60(m, 1H), 4.50(m, 1H), 4.20(m, 3H), 3.95(m, 1H), 2.85(m, 1H), 2.40(q, 2H), 2.10(m, 1H), 1.20(t, 3H), MS (ES+) m/e 521 (MH+).

Workup

customThe solvent is removed in vacuo

Sources & evidence

ORD record: ord-7f896d1eb1454348a80825022e3f53a5
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08163754B2

Reaction notes

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