4-Methylmorpholine → 2-hydroxy-N-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)-2-(4-(5-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-1,2,4-oxadiazol-3-yl)phenyl)acetamide

HRID 77135Notes

Reaction equation

HRID 77135 reaction equation
[OH:1][CH:2]([C:6]1[CH:11]=[CH:10][C:9]([C:12]2[N:16]=[C:15]([C:17]3[O:21][N:20]=[C:19]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=4)[C:18]=3[C:28]([F:31])([F:30])[F:29])[O:14][N:13]=2)=[CH:8][CH:7]=1)[C:3](O)=[O:4].CN1CCOCC1.[CH3:39][C:40]1[O:44][C:43]([CH2:45][NH2:46])=[N:42][N:41]=1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1>CN(C=O)C>[OH:1][CH:2]([C:6]1[CH:11]=[CH:10][C:9]([C:12]2[N:16]=[C:15]([C:17]3[O:21][N:20]=[C:19]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=4)[C:18]=3[C:28]([F:29])([F:31])[F:30])[O:14][N:13]=2)=[CH:8][CH:7]=1)[C:3]([NH:46][CH2:45][C:43]1[O:44][C:40]([CH3:39])=[N:41][N:42]=1)=[O:4]

Participants

6

Reactant 4

HCID 79724-MethylmorpholineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 14442192[(5-Methyl-1,3,4-oxadiazol-2-yl)methyl]amineHCID 674589572-Hydroxy-2-(4-(5-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-1,2,4-oxadiazol-3-yl)phenyl)acetic acid

Product 1

HCID 534966032-hydroxy-N-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)-2-(4-(5-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-1,2,4-oxadiazol-3-yl)phenyl)acetamideYield 33.7%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

2-Hydroxy-2-(4-(5-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-1,2,4-oxadiazol-3-yl)phenyl)acetic acid (Int-Va, 35 mg, 0.081 mmol) was dissolved in DMF (1 mL) prior to the addition of 4-methylmorpholine (0.054 mL, 0.487 mmol), (5-methyl-1,3,4-oxadiazol-2-yl)methanamine (16.52 mg, 0.146 mmol), and BOP (64.6 mg, 0.146 mmol). This was stirred overnight and was then purified by preparative HPLC (PHENOMENEX® Luna 5u C18 21.2×100 mm, gradient elution with Method 1—MeOH/water containing 0.1% trifluoroacetic acid as defined above, 0% B to 100% B over 10 min, 20 mL/min, 220 nM, product retention time=11.5 min) to give single enantiomer 2-hydroxy-N-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)-2-(4-(5-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-1,2,4-oxadiazol-3-yl)phenyl)acetamide (15.1 mg, 0.027 mmol, 33.7% yield): LCMS=527.3 [M+H]+; 1H NMR (400 MHz, methanol-d4) δ ppm 8.13-8.24 (2 H, m), 7.66-7.78 (4 H, m), 7.54-7.66 (3 H, m), 5.21 (1 H, s), 4.63 (2 H, d, J=3.30 Hz), 2.49 (3 H, s). HPLC Peak RT=9.2 min (Analytical Method C).

Workup

  1. customwas then purified by preparative HPLC (PHENOMENEX® Luna 5u
  2. washC18 21.2×100 mm, gradient elution with Method 1—MeOH/water containing 0.1% trifluoroacetic acid
  3. customover 10 min

Sources & evidence

ORD record
ord-e037262d59834300b47d50d6634bcbd0
Source dataset
uspto-grants-2014_09
Patent number
US08835470B2

Reaction notes

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