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Diisopropylethylamine → tert-Butyl {(3R,4R,5S)-1-[3-({[6-(2,6-difluorophenyl)-5-fluoropyridin-2-yl]carbonyl}amino)-7-hydroxy-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl]-4-hydroxy-5-methylpiperidin-3-yl}carbamate

HRID 1499496
Notes
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Reaction equation

HRID 1499496 reaction equation
C([O:4][C@@H:5]1[C@@H:10]([CH3:11])[CH2:9][N:8]([C:12]2[C:17]([NH2:18])=[CH:16][N:15]=[C:14]3[CH:19]([O:22]C(=O)C)[CH2:20][CH2:21][C:13]=23)[CH2:7][C@H:6]1[NH:26][C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])(=O)C.[F:34][C:35]1[CH:40]=[CH:39][CH:38]=[C:37]([F:41])[C:36]=1[C:42]1[N:47]=[C:46]([C:48](O)=[O:49])[CH:45]=[CH:44][C:43]=1[F:51].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>[OH-].[Na+].CO.CN(C=O)C>[F:34][C:35]1[CH:40]=[CH:39][CH:38]=[C:37]([F:41])[C:36]=1[C:42]1[N:47]=[C:46]([C:48]([NH:18][C:17]2[C:12]([N:8]3[CH2:9][C@H:10]([CH3:11])[C@@H:5]([OH:4])[C@H:6]([NH:26][C:27](=[O:28])[O:29][C:30]([CH3:31])([CH3:33])[CH3:32])[CH2:7]3)=[C:13]3[CH2:21][CH2:20][CH:19]([OH:22])[C:14]3=[N:15][CH:16]=2)=[O:49])[CH:45]=[CH:44][C:43]=1[F:51]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 592265526-(2,6-Difluorophenyl)-5-fluoropicolinic acidHCID 86726725(3R,4R,5S)-1-[7-(Acetyloxy)-3-amino-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl]-3-[(tert-butoxycarbonyl)amino]-5-methylpiperidin-4-yl acetate

Product 1

HCID 86726726
tert-Butyl {(3R,4R,5S)-1-[3-({[6-(2,6-difluorophenyl)-5-fluoropyridin-2-yl]carbonyl}amino)-7-hydroxy-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl]-4-hydroxy-5-methylpiperidin-3-yl}carbamate

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 6228DimethylformamideSolventHCID 14798Sodium HydroxideSolvent

Procedure

A mixture of (3R,4R,5S)-1-[7-(acetyloxy)-3-amino-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl]-3-[(tert-butoxycarbonyl)amino]-5-methylpiperidin-4-yl acetate (11 mg, 0.024 mmol), 6-(2,6-difluorophenyl)-5-fluoropyridine-2-carboxylic acid (9.0 mg, 0.036 mmol), HATU (33 mg, 0.086 mmol), DMF (0.090 mL) and DIPEA (23 mg, 0.18 mmol) was stirred at room temperature for 16 h. The reaction mixture was diluted with 1 M NaOH (1.0 mL) and MeOH (1.0 mL) and the mixture was stirred at room temperature for a further 1 h, and then concentrated under reduced pressure. After concentrating under reduced pressure, the aqueous layer was extracted with DCM three times. The combined organic extract was dried, filtered and concentrated under reduced pressure to give a crude product, which was further purified by preparative LCMS (pH=10 method; XBridge™ preparative C18 5 μm OBD™ column, 30×10 mm, 60 mL/min., eluting with a gradient of MeCN and water with 0.15% NH4OH) to give the sub-title compound as a colorless gum. LCMS calc. for C31H35F3N5O5 (M+H)+: m/z=614.3. Found: 614.2.

Workup

  1. stirringthe mixture was stirred at room temperature for a further 1 h
  2. concentrationconcentrated under reduced pressure
  3. concentrationAfter concentrating under reduced pressure
  4. extractionthe aqueous layer was extracted with DCM three times
  5. extractionThe combined organic extract
  6. customwas dried
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customto give a crude product, which
  10. customwas further purified by preparative LCMS (pH=10 method
  11. washXBridge™ preparative C18 5 μm OBD™ column, 30×10 mm, 60 mL/min., eluting with a gradient of MeCN and water with 0.15% NH4OH)

Sources & evidence

ORD record
ord-bd59f78f75594846b5ecced61cb699bd
Source dataset
uspto-grants-2015_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09200004B2

Reaction notes

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