Trifluoroacetic acid → (1S,2R,3S,5R)-3-Amino-5-(6-amino-2-chloro-purin-9-yl)-cyclopentane-1,2-diol trifluoroacetate

HRID 2382382Notes

Reaction equation

HRID 2382382 reaction equation
COC1C=CC(C([NH:18][C:19]2[N:27]=[C:26]([Cl:28])[N:25]=[C:24]3[C:20]=2[N:21]=[CH:22][N:23]3[C@@H:29]2[CH2:33][C@H:32]([N:34](C(OC(C)(C)C)=O)C(OC(C)(C)C)=O)[C@@H:31]([OH:49])[C@H:30]2[OH:50])C2C=CC(OC)=CC=2)=CC=1.[C:51]([OH:57])([C:53]([F:56])([F:55])[F:54])=[O:52]>ClCCl>[F:54][C:53]([F:56])([F:55])[C:51]([OH:57])=[O:52].[NH2:34][C@H:32]1[CH2:33][C@@H:29]([N:23]2[CH:22]=[N:21][C:20]3[C:24]2=[N:25][C:26]([Cl:28])=[N:27][C:19]=3[NH2:18])[C@H:30]([OH:50])[C@@H:31]1[OH:49]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 86622623(1R,2S,3R,5S)-3-(6-{[Bis-(4-methoxy-phenyl)-methyl]-amino}-2-chloro-purin-9-yl)-5-(di-Boc-amino)-cyclopentane-1,2-diol

Product 1

HCID 86622621(1S,2R,3S,5R)-3-Amino-5-(6-amino-2-chloro-purin-9-yl)-cyclopentane-1,2-diol trifluoroacetate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

(1R,2S,3R,5S)-3-(6-{[Bis-(4-methoxy-phenyl)-methyl]-amino}-2-chloro-purin-9-yl)-5-(di-Boc-amino)-cyclopentane-1,2-diol (600 mg, 0.84 mmol) is dissolved in dichloromethane (4 ml). TFA (2 ml) is added and the reaction mixture is stirred at room temperature. The reaction is shown to be complete by LCMS after 18 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); 8.10(s, 1H), 4.80(m, 1H), 4.60(m, 1H), 4.30(m, 1H), 3.60(m, 1H), 2.85(m, 1H), 2.30(m, 1H). MS (ES+) m/e 285 (MH+).

Workup

  1. customThe solvent is removed in vacuo

Sources & evidence

ORD record
ord-a858cccf02ca48e1b7a1d1df13abd699
Source dataset
uspto-grants-2012_09
Patent number
US08258141B2

Reaction notes

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