1,1'-Carbonyldiimidazole → N-[2-(4-(3-hydroxy-1-adamantylcarbonylamino)-1-piperidinyl)ethyl]-1-(2-propyl)-1H-indazole-3-carboxamide oxalate

HRID 399063Notes

Reaction equation

HRID 399063 reaction equation
[OH:1][C:2]12[CH2:11][CH:6]3[CH2:7][CH:8]([CH2:10][C:4]([C:12](O)=[O:13])([CH2:5]3)[CH2:3]1)[CH2:9]2.C(N1C=CN=C1)(N1C=CN=C1)=O.[C:27]([OH:32])(=[O:31])[C:28]([OH:30])=[O:29].C(O)(=O)C(O)=O.[NH2:39][CH:40]1[CH2:45][CH2:44][N:43]([CH2:46][CH2:47][NH:48][C:49]([C:51]2[C:59]3[C:54](=[CH:55][CH:56]=[CH:57][CH:58]=3)[N:53]([CH:60]([CH3:62])[CH3:61])[N:52]=2)=[O:50])[CH2:42][CH2:41]1>CN(C)C=O>[C:27]([OH:32])(=[O:31])[C:28]([OH:30])=[O:29].[OH:1][C:2]12[CH2:11][CH:6]3[CH2:7][CH:8]([CH2:10][C:4]([C:12]([NH:39][CH:40]4[CH2:41][CH2:42][N:43]([CH2:46][CH2:47][NH:48][C:49]([C:51]5[C:59]6[C:54](=[CH:55][CH:56]=[CH:57][CH:58]=6)[N:53]([CH:60]([CH3:62])[CH3:61])[N:52]=5)=[O:50])[CH2:44][CH2:45]4)=[O:13])([CH2:5]3)[CH2:3]1)[CH2:9]2

Participants

5

Reactant 3

HCID 682631,1'-CarbonyldiimidazoleHCID 27365183-Hydroxyadamantane-1-carboxylic acidHCID 86751129N-[2-(4-amino-1-piperidinyl)ethyl]-1-(2-propyl)-1H-indazole-3-carboxamide dioxalate

Product 1

HCID 18969239N-[2-(4-(3-hydroxy-1-adamantylcarbonylamino)-1-piperidinyl)ethyl]-1-(2-propyl)-1H-indazole-3-carboxamide oxalateYield 47%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Procedure

A mixture of 1.07 g (5.45 mmol) of 3-hydroxy-1-adamantylcarboxylic acid and 0.88 g (5.45 mmol) of 1,1'-carbonyldiimidazole in 10 mL of dimethylformamide was stirred for 2 hours at ambient temperature. To this solution was dropwise added 1.80 g (5.45 mmol) of the product of Example 23 in 7 mL of dimethylformamide. The reaction was stirred for 18 hours and then concentrated in vacuo, diluted with dichloromethane and solids removed by filtration. The crude product was purified by chromatography (silica, 9:1 dichloromethane-methanol) to provide 1.30 g (47%) of the desired product as a foam. Further treatment of the product with 0.23 g (2.62 mmol) of oxalic acid in 20 mL of ethanol provided, upon concentration of the solution, 1.51 g of the oxalate salt (LSN343031). 1H NMR (500 MHz, DMSO-d6) d 8.51 (t, 1H), 8.19 (d, 1H), 7.9 (br s, 3H), 7.78 (d, 1H), 7.44 (t, 1H), 7.40 (d, 1H), 7.27 (t, 1H), 5.06 (m, 1H), 3.84 (m, 1H), 3.72 (m, 2H), 3.52 (m, 2H), 3.24 (br t, 2H), 3.07 (br t, 2H), 2.11 (br s, 2H), 1.82 (m, 4H), 1.64 (m, 6H), 1.55 (m, 10H), 1.48 (br s, 2H).

Workup

  1. stirringThe reaction was stirred for 18 hours
  2. concentrationconcentrated in vacuo
  3. additiondiluted with dichloromethane and solids
  4. customremoved by filtration
  5. customThe crude product was purified by chromatography (silica, 9:1 dichloromethane-methanol)

Sources & evidence

ORD record
ord-1c3080e598c64d73903706f1a2ac3be9
Source dataset
uspto-grants-1998_10
Patent number
US05817676

Reaction notes

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