1-Hydroxybenzotriazole → N-tert-Butoxycarbonyl-trans-4-(N-tert-Butoxycabonylglycylamino)-L-Proline 4-Phenylbenzylamide

HRID 2185454Notes

Reaction equation

HRID 2185454 reaction equation
ON1C2C=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.FC(F)(F)C(O)=O.[C:30]1([C:36]2[CH:43]=[CH:42][C:39]([CH2:40][NH2:41])=[CH:38][CH:37]=2)[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1.[C:44]([O:48][C:49]([NH:51][CH2:52][C:53]([NH:55][C@H:56]1[CH2:60][N:59]([C:61]([O:63][C:64]([CH3:67])([CH3:66])[CH3:65])=[O:62])[C@H:58]([C:68](O)=[O:69])[CH2:57]1)=[O:54])=[O:50])([CH3:47])([CH3:46])[CH3:45]>ClCCl.C(N(CC)CC)C>[C:30]1([C:36]2[CH:37]=[CH:38][C:39]([CH2:40][NH:41][C:68](=[O:69])[C@@H:58]3[CH2:57][C@@H:56]([NH:55][C:53](=[O:54])[CH2:52][NH:51][C:49]([O:48][C:44]([CH3:47])([CH3:46])[CH3:45])=[O:50])[CH2:60][N:59]3[C:61]([O:63][C:64]([CH3:67])([CH3:66])[CH3:65])=[O:62])=[CH:42][CH:43]=2)[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=1

Participants

7

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 21341559trans-4-(N-tert-butoxycarbonylglycyl)amino-N-tert-butoxycarbonyl-L-prolineHCID 224587204-Phenylbenzylamine trifluoroacetate

Product 1

HCID 131723254N-tert-Butoxycarbonyl-trans-4-(N-tert-Butoxycabonylglycylamino)-L-Proline 4-PhenylbenzylamideYield 83.2%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8471TriethylamineSolvent

Procedure

Triethylamine (130 μL), 1-hydroxybenzotriazole (59 mg), and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (89 mg) were added to a solution of the 4-phenylbenzylamine trifluoroacetate (B, 126 mg) and trans-4-(N-tert-butoxycarbonylglycylamino)-N-tert-butoxycarbonyl-L-proline (Compound D103 (B), 150 mg) in dichloromethane (10 mL) at 0° C. The mixture was stirred at room temperature for 16 hr and concentrated in vacuo. The residue was diluted with ethyl acetate and washed with 1 N hydrochloric acid, water, saturated sodium hydrogen carbonate, and brine. The organic layer was dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by silica gel column chromatography (chloroform then chloroform:methanol=99:1 to 98:2, v/v) to give the title compound (178 mg) as a colorless foam:1H NMR (400 MHz, CDCl3) δ 1.45 (s, 18H), 1,67 (s, 2H), 2.01 (brs, 1H), 2.64 (br s, 1H), 3.27 (br s, 1H), 3.68-3.81 (m, 3H), 4.23-4.70 (m, 3H), 5.17 (br s, 1H), 6.43 (br s, 1H), 7.32-7.36 (m, 3H), 7.44 (t, J=7.6 Hz, 2H), and 7.53-7.57 (m, 4H).

Workup

  1. concentrationconcentrated in vacuo
  2. additionThe residue was diluted with ethyl acetate
  3. washwashed with 1 N hydrochloric acid, water, saturated sodium hydrogen carbonate, and brine
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by silica gel column chromatography (chloroform

Sources & evidence

ORD record
ord-156795b7c15948808f2181f6e80bc2d2
Source dataset
uspto-grants-2002_06
Patent number
US06399629B1

Reaction notes

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