Hydrochloric Acid → (3-Cyano-1-{3-[6-(9,9-difluoro-7-{2-[5-(2-methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl}-9H-fluoren-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carbonyl}-propyl)-carbamic acid methyl ester

HRID 71887Notes

Reaction equation

HRID 71887 reaction equation
C([O:5][C:6]([N:8]1[CH:13]([C:14]2[NH:18][C:17]3[CH:19]=[C:20]([C:23]4[CH:35]=[CH:34][C:33]5[C:32]6[C:27](=[CH:28][C:29]([C:36]7[NH:37][C:38]([CH:41]8[CH2:47][C:44]9([CH2:46][CH2:45]9)[CH2:43][N:42]8[C:48](=[O:58])[CH:49]([NH:53][C:54]([O:56][CH3:57])=[O:55])[CH:50]([CH3:52])[CH3:51])=[N:39][CH:40]=7)=[CH:30][CH:31]=6)[C:26]([F:60])([F:59])[C:25]=5[CH:24]=4)[CH:21]=[CH:22][C:16]=3[N:15]=2)[CH:12]2[CH2:61][CH:9]1[CH2:10][CH2:11]2)=O)(C)(C)C.Cl.C[CH2:64][N:65](C(C)C)C(C)C.[CH3:72][O:73][C:74]([NH:76][CH:77]([CH:81]([C:83]#N)C)C(O)=O)=[O:75].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>C(Cl)Cl.O1CCOCC1.CN(C=O)C.CCOC(C)=O>[CH3:72][O:73][C:74](=[O:75])[NH:76][CH:77]([C:6]([N:8]1[CH:13]([C:14]2[NH:18][C:17]3[CH:19]=[C:20]([C:23]4[CH:35]=[CH:34][C:33]5[C:32]6[C:27](=[CH:28][C:29]([C:36]7[NH:37][C:38]([CH:41]8[CH2:47][C:44]9([CH2:45][CH2:46]9)[CH2:43][N:42]8[C:48](=[O:58])[CH:49]([NH:53][C:54]([O:56][CH3:57])=[O:55])[CH:50]([CH3:51])[CH3:52])=[N:39][CH:40]=7)=[CH:30][CH:31]=6)[C:26]([F:59])([F:60])[C:25]=5[CH:24]=4)[CH:21]=[CH:22][C:16]=3[N:15]=2)[CH:12]2[CH2:61][CH:9]1[CH2:10][CH2:11]2)=[O:5])[CH2:81][CH2:83][C:64]#[N:65]

Participants

10

Reactant 5

HCID 313Hydrochloric AcidHCID 81531Diisopropylethylamine2×HCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 666212893-[6-(9,9-Difluoro-7-{2-[5-(2-methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl}-9H-fluoren-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl esterHCID 86648886Methoxycarbonylamino-3-cyano-butyric acid

Product 1

HCID 66620199(3-Cyano-1-{3-[6-(9,9-difluoro-7-{2-[5-(2-methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl}-9H-fluoren-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carbonyl}-propyl)-carbamic acid methyl esterYield 49.7%

Reagents, catalysts & solvents 4

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

3-[6-(9,9-Difluoro-7-{2-[5-(2-methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl}-9H-fluoren-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester (61.9 mg, 0.074 mmol) was dissolved in DCM (1 mL) and HCl in dioxane (4M, 1 mL) was added and stirring at room temperature was continued. After 30 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (1.0 mL) and DIEA (28.5 mg, 0.186 mmol) was added. A solution of 2-(L) Methoxycarbonylamino-3-cyano-butyric acid (13.8 mg, 0.074 mmol), HATU (28.3 mg, 0.074 mmol) and DIEA (9.5 mg, 0.074 mmol) in DMF (0.5 mL) was added. The reaction was stirred at room temperature. After 30 minutes, the reaction was diluted with EtOAc and was washed with aqueous bicarbonate solution, aqueous LiCl solution (5%), brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material, which was purified by RP-HPLC (eluent: water/MeCN w/0.1% TFA) to yield the product (3-Cyano-1-{3-[6-(9,9-difluoro-7-{2-[5-(2-methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl}-9H-fluoren-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carbonyl}-propyl)-carbamic acid methyl ester (33.1 mg) as a TFA salt.

Workup

  1. customall volatiles were removed in vacuo
  2. customThe crude material was used in the next step without further purification
  3. dissolutionThe crude material was dissolved in DMF (1.0 mL)
  4. stirringThe reaction was stirred at room temperature
  5. waitAfter 30 minutes
  6. washwas washed with aqueous bicarbonate solution, aqueous LiCl solution (5%), brine
  7. dry with materialwas dried over sodium sulfate
  8. filtrationFiltration and removal of solvents in vacuo
  9. customgave the crude material, which
  10. customwas purified by RP-HPLC (eluent: water/MeCN w/0.1% TFA)

Sources & evidence

ORD record
ord-ab5b1798bbce4470a02b2ec4eff746b8
Source dataset
uspto-grants-2014_09
Patent number
US08822430B2

Reaction notes

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