Ethanol → HCID 66778367, compound

HRID 2091035Notes

Reaction equation

HRID 2091035 reaction equation
[CH:1]1([CH:7]([NH:20][C:21]2[CH:26]=[CH:25][C:24]([C:27]([N:29]([CH3:37])[CH2:30][CH2:31][C:32]([O:34]CC)=[O:33])=[O:28])=[CH:23][CH:22]=2)[C:8]2[O:9][C:10]3[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][C:11]=3[C:12]=2[CH3:13])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.CCCCCC.C(O)C.C(O)C.[OH-].[Na+]>O1CCCC1>[CH:1]1([CH:7]([NH:20][C:21]2[CH:22]=[CH:23][C:24]([C:27]([N:29]([CH3:37])[CH2:30][CH2:31][C:32]([OH:34])=[O:33])=[O:28])=[CH:25][CH:26]=2)[C:8]2[O:9][C:10]3[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][C:11]=3[C:12]=2[CH3:13])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

6

Reactant 4

HCID 702EthanolHCID 14798Sodium HydroxideHCID 21879635Ethanol hexaneHCID 66777111HCID 66777111, compound

Product 1

HCID 66778367HCID 66778367, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Ethyl 3-{[(4-{[cyclohexyl(5-methoxy-3-methyl-1-benzofuran-2-yl)methyl]amino}phenyl)carbonyl](methyl)amino}propanoate (795 mg) synthesized in Example A43(2) was fractionated by high performance liquid chromatography (column: CHIRALPAK AD (50 mm ID×500 mL, manufactured by Daicel Chemical Industries, Ltd., mobile phase: hexane/ethanol (400/600), flow rate: 60 mL/min, column temperature: 30° C.). The fraction containing an optically active form having a longer retention time under the above-mentioned high performance liquid chromatography conditions was concentrated to give an amorphous form (418 mg, 99.9% ee). To a mixture of the obtained amorphous form, ethanol (5 mL) and tetrahydrofuran (5 mL) was added 1N aqueous sodium hydroxide solution (2.00 mL), and the mixture was stirred at room temperature for 1.5 hr, and concentrated under reduced pressure. The residue was dissolved in water (10 mL), and 1N hydrochloric acid (2.00 mL) was added at 0° C. The resulting precipitate was collected by filtration to give the title object compound (354 mg, 47%, 99.9% ee) as a white solid.

Workup

  1. additionThe fraction containing an optically active form
  2. concentrationwas concentrated
  3. customto give an amorphous form (418 mg, 99.9% ee)
  4. concentrationconcentrated under reduced pressure
  5. dissolutionThe residue was dissolved in water (10 mL)
  6. addition1N hydrochloric acid (2.00 mL) was added at 0° C
  7. filtrationThe resulting precipitate was collected by filtration
  8. customto give the title object compound (354 mg, 47%, 99.9% ee) as a white solid

Sources & evidence

ORD record
ord-d0387bcab74c4bc3b5bbfb4ca744cdd0
Source dataset
uspto-grants-2013_05
Patent number
US08436043B2

Reaction notes

Loading…