4-Methylmorpholine → (2R)-(4'-chlorobiphenyl-4-sulfonylamino)-5-(1,3-dioxo-1,3-dihydroisoindol-2-yl)pentanoic acid O-tritylhydroxyamide

HRID 651323Notes

Reaction equation

HRID 651323 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:13]=[CH:12][C:11]([S:14]([NH:17][C@H:18]([CH2:22][CH2:23][CH2:24][N:25]3[C:33](=[O:34])[C:32]4[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=4)[C:26]3=[O:35])[C:19]([OH:21])=O)(=[O:16])=[O:15])=[CH:10][CH:9]=2)=[CH:4][CH:3]=1.CN1CCOCC1.ON1C2N=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.[C:65]([O:84][NH2:85])([C:78]1[CH:83]=[CH:82][CH:81]=[CH:80][CH:79]=1)([C:72]1[CH:77]=[CH:76][CH:75]=[CH:74][CH:73]=1)[C:66]1[CH:71]=[CH:70][CH:69]=[CH:68][CH:67]=1>ClCCl>[C:65]([O:84][NH:85][C:19](=[O:21])[C@H:18]([NH:17][S:14]([C:11]1[CH:12]=[CH:13][C:8]([C:5]2[CH:4]=[CH:3][C:2]([Cl:1])=[CH:7][CH:6]=2)=[CH:9][CH:10]=1)(=[O:15])=[O:16])[CH2:22][CH2:23][CH2:24][N:25]1[C:26](=[O:35])[C:27]2[C:32](=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:33]1=[O:34])([C:72]1[CH:73]=[CH:74][CH:75]=[CH:76][CH:77]=1)([C:78]1[CH:83]=[CH:82][CH:81]=[CH:80][CH:79]=1)[C:66]1[CH:71]=[CH:70][CH:69]=[CH:68][CH:67]=1

Participants

7

Reactant 5

HCID 79724-MethylmorpholineHCID 181649HOAtHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 3015602O-(triphenylmethyl)hydroxylamineHCID 15549671(2R)-(4'-chlorobiphenyl-4-sulfonylamino)-5-(1,3-dioxo-1,3-dihydroisoindol-2-yl)pentanoic acid2×

Product 1

HCID 54536000(2R)-(4'-chlorobiphenyl-4-sulfonylamino)-5-(1,3-dioxo-1,3-dihydroisoindol-2-yl)pentanoic acid O-tritylhydroxyamideYield 64%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of the title compound of Example 1, (2R)-(4′-chlorobiphenyl-4-sulfonylamino)-5-(1,3-dioxo-1,3-dihydroisoindol-2-yl)pentanoic acid (304 mg, 0.593 mmol) and NMM (0.330 mL, 3.00 mmol) in 10 mL of dichloromethane is treated with 1-hydroxy-7-azabenzotriazole (89 mg, 0.654 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (170 mg, 0.886 mmol) at RT. After stirring for 30 min, O-tritylhydroxylamine (489 mg, 1.776 mmol) is added, and the reaction is stirred for 16 h. The mixture is partitioned between 60 mL of dichloromethane and 40 mL of water. The organic solution is washed with 30 mL of 1M aqueous NaHCO3, dried over anhydrous Na2SO4 and concentrated. Chomatography on silica gel (eluant; 4/6—ethyl acetate/hexane) affords 293 mg (64%) of (2R)-(4′-chlorobiphenyl-4-sulfonylamino)-5-(1,3-dioxo-1,3-dihydroisoindol-2-yl)pentanoic acid O-tritylhydroxyamide as a waxy solid: NMR(CDCl3) 0.62-0.76 (br m, 1H), 1.08-1.24 (br m, 1H), 1.46-1.65 (br m, 1H), 1.72-1.87 (br m, 1H), 3.65-3.73 (m, 2H), 3.94 (t, 1H, J=8.7), 5.31 (d, 1H, J=9.2), 7.20-7.27 (m, 15H), 7.48 (d, 4H, J=8.4), 7.59 (d, 2H, J=8.5), 7.70 (d, 4H, J=8.3), 7.91 (d, 2H, J=8.3), 8.27 (s, 1H); IR 1770, 1710, 1349, 1166; ESI-MS 770 (M++1).

Workup

  1. stirringthe reaction is stirred for 16 h
  2. customThe mixture is partitioned between 60 mL of dichloromethane and 40 mL of water
  3. washThe organic solution is washed with 30 mL of 1M aqueous NaHCO3
  4. dry with materialdried over anhydrous Na2SO4
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-0e8f0aae56bc464c888b0db1624cce00
Source dataset
uspto-grants-2001_08
Patent number
US06277987B1

Reaction notes

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