Diisopropylethylamine → Ethyl 2-((8-(benzyloxy)-5-(5-(tert-butoxycarbonylamino)-N-methylpentylsulfonamido)-1,6-naphthyridine-7-carboxamido)methyl)-5-fluorobenzoate

HRID 455311Notes

Reaction equation

HRID 455311 reaction equation
[CH2:1]([O:8][C:9]1[C:10]([C:37](O)=[O:38])=[N:11][C:12]([N:19]([CH3:36])[S:20]([CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][NH:28][C:29]([O:31][C:32]([CH3:35])([CH3:34])[CH3:33])=[O:30])(=[O:22])=[O:21])=[C:13]2[C:18]=1[N:17]=[CH:16][CH:15]=[CH:14]2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.Cl.[NH2:74][CH2:75][C:76]1[CH:86]=[CH:85][C:84]([F:87])=[CH:83][C:77]=1[C:78]([O:80][CH2:81][CH3:82])=[O:79]>ClCCl>[CH2:1]([O:8][C:9]1[C:10]([C:37]([NH:74][CH2:75][C:76]2[CH:86]=[CH:85][C:84]([F:87])=[CH:83][C:77]=2[C:78]([O:80][CH2:81][CH3:82])=[O:79])=[O:38])=[N:11][C:12]([N:19]([CH3:36])[S:20]([CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][NH:28][C:29]([O:31][C:32]([CH3:33])([CH3:34])[CH3:35])=[O:30])(=[O:21])=[O:22])=[C:13]2[C:18]=1[N:17]=[CH:16][CH:15]=[CH:14]2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 67109674Ethyl 2-(aminomethyl)-5-fluorobenzoate hydrochlorideHCID 671099298-(benzyloxy)-5-(5-(tert-butoxycarbonylamino)-N-methylpentylsulfonamido)-1,6-naphthyridine-7-carboxylic acid

Product 1

HCID 68009395Ethyl 2-((8-(benzyloxy)-5-(5-(tert-butoxycarbonylamino)-N-methylpentylsulfonamido)-1,6-naphthyridine-7-carboxamido)methyl)-5-fluorobenzoateYield 71%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 8-(benzyloxy)-5-(5-(tert-butoxycarbonylamino)-N-methylpentylsulfonamido)-1,6-naphthyridine-7-carboxylic acid (Example 2.4; 3.82 mmol) in dichloro methane (38 ml) were added HBTU (4.58 mmol) and DIPEA (15.8 mmol). The mixture was stirred for 5 min at rt. Ethyl 2-(aminomethyl)-5-fluorobenzoate hydrochloride (Example 4; 4.58 mmol) was added portionwise at rt. The mixture was stirred overnight at rt. The product was extracted with CH2Cl2, dried over MgSO4 and concentrated. The crude product was purified by SiO2 column chromatography (AcOEt:Hex, 1:1) to afford the target compound in 71% yield.

Workup

  1. stirringThe mixture was stirred overnight at rt
  2. extractionThe product was extracted with CH2Cl2
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated
  5. customThe crude product was purified by SiO2 column chromatography (AcOEt:Hex, 1:1)
  6. customto afford the target compound in 71% yield

Sources & evidence

ORD record
ord-4a66b0a27a144141b0e4cd7aae425fcc
Source dataset
uspto-grants-2013_07
Patent number
US08497270B2

Reaction notes

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