Diisopropylethylamine → HCID 59057040, compound

HRID 1602014Notes

Reaction equation

HRID 1602014 reaction equation
[C:1]([O:5][C:6]([NH:8][C:9]([CH3:17])([CH3:16])[CH2:10]/[CH:11]=[CH:12]/[C:13]([OH:15])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].ON1C2N=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.[CH2:40]([C@@H:47]([N:56]([CH3:73])[C:57](=[O:72])[C@H:58]([NH:70][CH3:71])[CH2:59][C:60]1[CH:69]=[CH:68][C:67]2[C:62](=[CH:63][CH:64]=[CH:65][CH:66]=2)[CH:61]=1)[CH2:48][NH:49][C:50]([NH:52][CH:53]1[CH2:55][CH2:54]1)=[S:51])[C:41]1[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=1.C(N(C(C)C)C(C)C)C>CN(C)C=O.ClCCl.C(OCC)(=O)C>[C:1]([O:5][C:6](=[O:7])[NH:8][C:9]([CH3:17])([CH3:16])[CH2:10]/[CH:11]=[CH:12]/[C:13](=[O:15])[N:70]([C@@H:58]([C:57](=[O:72])[N:56]([C@H:47]([CH2:40][C:41]1[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=1)[CH2:48][NH:49][C:50]([NH:52][CH:53]1[CH2:54][CH2:55]1)=[S:51])[CH3:73])[CH2:59][C:60]1[CH:69]=[CH:68][C:67]2[C:62](=[CH:63][CH:64]=[CH:65][CH:66]=2)[CH:61]=1)[CH3:71])([CH3:2])([CH3:3])[CH3:4]

Participants

9

Reactant 5

HCID 81531DiisopropylethylamineHCID 181649HOAtHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 10847814(2E)-5-(tert-Butyloxycarbonylamino)-5-methylhex-2-enoic acidHCID 18394421HCID 18394421, compound

Product 1

HCID 59057040HCID 59057040, compoundYield 34.4%

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent2×HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

(2E)-5-tert-Butoxycarbonylamino-5-methylhex-2-enoic acid (182 mg, 0.75 mmol) was dissolved in N,N-dimethylformamide (2 ml) and dichloromethane (2 ml). 1-Hydroxy-7-azabenzotriazole (102 mg, 0.75 mmol) was added. The solution was cooled to 0° C. N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (144 mg, 0.75 mmol) was added. The solution was stirred for 15 min at 0° C. (2R)-N-((1R)-1-Benzyl-2-(3-cyclopropylthioureido)ethyl)-N-methyl-2-methylamino-3-(2-naphthyl)propionamide (178 mg, 0.37 mmol) was dissolved in dichloromethane and added to the reaction mixture. Ethyidiisopropylamine (0.13 ml, 0.75 mmol) was added. The solution was stirred for 16 h, while it was warming up to room temperature. It was diluted with ethyl acetate (200 ml) and washed with 10% aqueous sodium hydrogen sulfate solution (100 ml). The aqueous solution was extracted with ethyl acetate (3×50 ml). The combined organic layers were washed with saturated sodium hydrogen carbonate solution (150 ml) and dried over magnesium sulfate. The solvent was removed in vacuo. The crude product was purified by flash chromatography on silica (45 g) to give 89 mg of (3E)-4-(N-((1R)-1-(N-((1R)-1-benzyl-2-(3-cyclopropylthioureido)ethyl)-N-methylcarbamoyl)-2-(2-naphthyl)ethyl)-N-methylcarbamoyl)-1,1-dimethylbut-3-enylcarbamic acid tert-butylester.

Workup

  1. additionadded to the reaction mixture
  2. temperaturewas warming up to room temperature
  3. washwashed with 10% aqueous sodium hydrogen sulfate solution (100 ml)
  4. extractionThe aqueous solution was extracted with ethyl acetate (3×50 ml)
  5. washThe combined organic layers were washed with saturated sodium hydrogen carbonate solution (150 ml)
  6. dry with materialdried over magnesium sulfate
  7. customThe solvent was removed in vacuo
  8. customThe crude product was purified by flash chromatography on silica (45 g)

Sources & evidence

ORD record
ord-d6278166ecc841f389a79fb7be08d418
Source dataset
uspto-grants-1999_11
Patent number
US05977178

Reaction notes

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