Benzaldehyde → (2R,3R,4S,5R)-2-[2-[(Benzylamino)methyl]-6-[(2,2-diphenylethyl)amino]-9H-purin-9-yl]-5-(methoxymethyl)tetrahydro-3,4-furandiol

HRID 2268344Notes

Reaction equation

HRID 2268344 reaction equation
[NH2:1][CH2:2][C:3]1[N:11]=[C:10]2[C:6]([N:7]=[CH:8][N:9]2[C@H:12]2[C@H:16]([OH:17])[C@H:15]([OH:18])[C@@H:14]([CH2:19][O:20][CH3:21])[O:13]2)=[C:5]([NH:22][CH2:23][CH:24]([C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)[C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[N:4]=1.[CH:37](=O)[C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>O1CCCC1.C(OCC)(=O)C>[CH2:37]([NH:1][CH2:2][C:3]1[N:11]=[C:10]2[C:6]([N:7]=[CH:8][N:9]2[C@H:12]2[C@H:16]([OH:17])[C@H:15]([OH:18])[C@@H:14]([CH2:19][O:20][CH3:21])[O:13]2)=[C:5]([NH:22][CH2:23][CH:24]([C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)[C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)[N:4]=1)[C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1

Participants

6

Reactant 3

HCID 240BenzaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 9897827(2R,3R,4S,5R)-2-{2-(Aminomethyl)-6-[(2,2-diphenylethyl)amino]-9H-purin-9-yl}-5-(methoxymethyl)tetrahydro-3,4-furandiol

Product 1

HCID 9894535(2R,3R,4S,5R)-2-[2-[(Benzylamino)methyl]-6-[(2,2-diphenylethyl)amino]-9H-purin-9-yl]-5-(methoxymethyl)tetrahydro-3,4-furandiolYield 57.7%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 8857Ethyl AcetateSolvent

Procedure

(2R,3R,4S,5R)-2-{2-(Aminomethyl)-6-[(2,2-diphenylethyl)amino]-9H-purin-9-yl}-5-(methoxymethyl)tetrahydro-3,4-furandiol (example 1) (110 mg, 0.22 mmol) was dissolved (using gentle heating) in dry tetrahydrofuran (15 ml). The stirred solution was then cooled to room temperature and treated with a solution of benzaldehyde (21 mg, 0.20 mmol) in dry tetrahydrofuran (2 ml) followed by addition of sodium triacetoxyborohydride (70 mg, 0.33 mmol). The resultant mixture was stirred at room temperature for 24 hr, diluted with ethyl acetate and then washed sequentially with saturated aqueous sodium hydrogen carbonate and brine. The organic solution was then dried with anhydrous magnesium sulfate and the solvent removed under reduced pressure. The residue was purified by column chromatography on silica gel eluting with a solvent system of dichloromethane:methanol (92:8) to afford the title compound as a solid (67 mg). MS: 581 (MH+).

Workup

  1. washwashed sequentially with saturated aqueous sodium hydrogen carbonate and brine
  2. dry with materialThe organic solution was then dried with anhydrous magnesium sulfate
  3. customthe solvent removed under reduced pressure
  4. customThe residue was purified by column chromatography on silica gel eluting with a solvent system of dichloromethane:methanol (92:8)

Sources & evidence

ORD record
ord-aad964db697d4a1aa9e470639c215d02
Source dataset
uspto-grants-2001_12
Patent number
US06326359B1

Reaction notes

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