Diethyl cyanophosphonate → tert-Butyl cis-5-{[(1-cyclobutyl-1H-indazol-3-yl)carbonyl]amino}-2-[(4-hydroxytetrahydro-2H-pyran-4-yl)methyl]piperidine-1-carboxylate

HRID 602460Notes

Reaction equation

HRID 602460 reaction equation
[CH:1]1([N:5]2[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[C:7]([C:14]([OH:16])=O)=[N:6]2)[CH2:4][CH2:3][CH2:2]1.[NH2:17][C@H:18]1[CH2:23][N:22]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[C@@H:21]([CH2:31][C:32]2([OH:38])[CH2:37][CH2:36][O:35][CH2:34][CH2:33]2)[CH2:20][CH2:19]1.C(P(=O)(OCC)OCC)#N.C(N(CC)C(C)C)(C)C.C(=O)([O-])O.[Na+]>CN(C)C=O>[CH:1]1([N:5]2[C:13]3[C:8](=[CH:9][CH:10]=[CH:11][CH:12]=3)[C:7]([C:14]([NH:17][C@H:18]3[CH2:23][N:22]([C:24]([O:26][C:27]([CH3:29])([CH3:30])[CH3:28])=[O:25])[C@@H:21]([CH2:31][C:32]4([OH:38])[CH2:33][CH2:34][O:35][CH2:36][CH2:37]4)[CH2:20][CH2:19]3)=[O:16])=[N:6]2)[CH2:2][CH2:3][CH2:4]1

Participants

7

Reactant 5

HCID 76257Diethyl cyanophosphonateHCID 81531DiisopropylethylamineHCID 516892Sodium BicarbonateHCID 214787871-Cyclobutyl-1H-indazole-3-carboxylic acidHCID 67269815tert-Butyl cis-5-amino-2-[(4-hydroxytetrahydro-2H-pyran-4-yl)methyl]piperidine-1-carboxylate

Product 1

HCID 67270199tert-Butyl cis-5-{[(1-cyclobutyl-1H-indazol-3-yl)carbonyl]amino}-2-[(4-hydroxytetrahydro-2H-pyran-4-yl)methyl]piperidine-1-carboxylateYield 35%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

The mixture of 1-cyclobutyl-1H-indazole-3-carboxylic acid (135 mg, 0.63 mmol, step 2 of Example 4), tert-butyl cis-5-amino-2-[(4-hydroxytetrahydro-2H-pyran-4-yl)methyl]piperidine-1-carboxylate (197 mg, 6.27 mmol, step 5 of Example 2), diethyl cyanophosphonate (0.13 mL, 0.75 mmol), and N,N-diisopropylethylamine (0.16 mL, 0.94 mmol) in N,N-dimethylformamide (10 mL) was stirred at room temperature for 12 h. Then the mixture was poured onto aqueous saturated sodium hydrogencarbonate (100 mL), and the aqueous layer was extracted with ethyl acetate/toluene (3:1, 100 mL×3). The combined organic layer was concentrated under reduced pressure. The residue was chromatographed on a column of silica gel eluting with ethyl acetate/n-hexane (1:2) to give 112 mg (35%) of the title compound as a pale yellow amorphous.

Workup

  1. extractionthe aqueous layer was extracted with ethyl acetate/toluene (3:1, 100 mL×3)
  2. concentrationThe combined organic layer was concentrated under reduced pressure
  3. customThe residue was chromatographed on a column of silica gel eluting with ethyl acetate/n-hexane (1:2)

Sources & evidence

ORD record
ord-877a7abe0d75412c8172f96051ab30bf
Source dataset
uspto-grants-2011_03
Patent number
US07906532B2

Reaction notes

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