1-Hydroxybenzotriazole → HCID 86747498, compound

HRID 1198079Notes

Reaction equation

HRID 1198079 reaction equation
[CH:1]12CC3CC(C[CH:3](C3)[CH:2]1[O:11][C:12]([NH:14][C:15]([CH3:29])([C:26]([OH:28])=O)[CH2:16][C:17]1[C:25]3[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=3)[NH:19][CH:18]=1)=[O:13])[CH2:8]2.ON1[C:35]2[CH:36]=[CH:37][CH:38]=[CH:39][C:34]=2N=N1.Cl.CN(C)CCCN=C=NCC.[NH2:52][CH2:53][CH2:54][C:55]1[CH:60]=[CH:59][CH:58]=[CH:57][N:56]=1>C(OCC)(=O)C.CN(C)C=O>[NH:19]1[C:20]2[C:25](=[CH:24][CH:23]=[CH:22][CH:21]=2)[C:17]([CH2:16][C:15]([NH:14][C:12](=[O:13])[O:11][CH:2]([CH2:1][CH2:8][CH2:38][CH2:39][CH2:34][CH2:35][CH2:36][CH3:37])[CH3:3])([CH3:29])[C:26](=[O:28])[NH:52][CH2:53][CH2:54][C:55]2[CH:60]=[CH:59][CH:58]=[CH:57][N:56]=2)=[CH:18]1

Participants

7

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 759192-PyridineethanamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 148025032-adamantyloxycarbonyl-alpha-methyl-DL-tryptophan

Product 1

HCID 86747498HCID 86747498, compoundYield 72%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent2×

Procedure

To a solution of 2-adamantyloxycarbonyl-α-methyl-DL-tryptophan (0.400 g, 1.01 mmol) in ethyl acetate (6 mL) and N,N-dimethylformamide (4 mL) under nitrogen atmosphere was added 1-hydroxybenzotriazole (0.138 g, 1.20 mmol) followed by 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.198 g, 1.03 mmol). This mixture was stirred 2 hours and 2(2-aminoethyl)pyridine (0.16 mL, 1.3 mmol) was added. After stirring an additional 18 hours, the resulting mixture was diluted with ethyl acetate (20 mL), and washed with aqueous 1N citric acid, aqueous saturated sodium bicarbonate, and brine solutions. The organic phase was dried over MgSO4, concentrated, and purified by flash chromatography (SiO2, 230-400 mesh, ethyl acetate eluant). After concentration, the residue was dried under vacuum at 60° C. for 48 hours to provide 0.365 g (72%) of product; 1H NMR (CDCl3) δ 1.40-1.60 (2H, m), 1.56 (3H, s), 1.65-1.95 (12H, m), 2.88 (2H, t, J 6 Hz), 3.39 (2H, d, J 5 Hz), 3.50-3.70 (2H, m), 4.75 (1H, br s), 5.35 (1H, br s), 6.40 (1H, d, J 2 Hz), 7.00-7.20 (4H, m), 7.22-7.35 (2H, m), 7.52-7.60 (2H, m), 8.20 (1H, br s), 8.40-8.45 (1H, m).

Workup

  1. stirringAfter stirring an additional 18 hours
  2. washwashed with aqueous 1N citric acid, aqueous saturated sodium bicarbonate, and brine solutions
  3. dry with materialThe organic phase was dried over MgSO4
  4. concentrationconcentrated
  5. custompurified by flash chromatography (SiO2, 230-400 mesh, ethyl acetate eluant)
  6. concentrationAfter concentration
  7. customthe residue was dried under vacuum at 60° C. for 48 hours

Sources & evidence

ORD record
ord-371b291696664c038e6b133031629e25
Source dataset
uspto-grants-1994_01
Patent number
US05278316

Reaction notes

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