Diisopropylethylamine → Grazoprevir

HRID 659832Notes

Reaction equation

HRID 659832 reaction equation
[C:1]([C@H:5]1[C:33](=[O:34])[N:32]2[CH2:35][C@@H:29]([CH2:30][C@H:31]2[C:36](O)=[O:37])[O:28][C:17]2=[N:18][C:19]3[CH:20]=[C:21]([O:26][CH3:27])[CH:22]=[CH:23][C:24]=3[N:25]=[C:16]2[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][C@@H:10]2[CH2:39][C@H:9]2[O:8][C:7](=[O:40])[NH:6]1)([CH3:4])([CH3:3])[CH3:2].[Cl-].[CH:42]1([S:45]([NH:48][C:49]([C@@:51]2([NH3+:56])[CH2:53][C@H:52]2[CH:54]=[CH2:55])=[O:50])(=[O:47])=[O:46])[CH2:44][CH2:43]1.CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F>C(Cl)Cl.CN(C1C=CN=CC=1)C.CCOC(C)=O>[C:1]([C@H:5]1[C:33](=[O:34])[N:32]2[CH2:35][C@@H:29]([CH2:30][C@H:31]2[C:36]([NH:56][C@:51]2([C:49]([NH:48][S:45]([CH:42]3[CH2:44][CH2:43]3)(=[O:47])=[O:46])=[O:50])[CH2:53][C@H:52]2[CH:54]=[CH2:55])=[O:37])[O:28][C:17]2=[N:18][C:19]3[CH:20]=[C:21]([O:26][CH3:27])[CH:22]=[CH:23][C:24]=3[N:25]=[C:16]2[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][C@@H:10]2[CH2:39][C@H:9]2[O:8][C:7](=[O:40])[NH:6]1)([CH3:3])([CH3:4])[CH3:2]

Participants

8

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 46930991MK-5172HCID 86637110[(1R,2S)-1-(cyclopropylsulfonylcarbamoyl)-2-ethenylcyclopropyl]azanium chloride

Product 1

HCID 44603531GrazoprevirYield 89%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
20 °C

Procedure

A solution (0.1 M) of (1aR,5S,8S,10R,22aR)-5-tert-butyl-14-methoxy-3,6-dioxo-1,1a,3,4,5,6,9,10,18,19,20,21,22,22a-tetradecahydro-8H-7,10-methanocyclopropa[18,19][1,10,3,6]dioxadiazacyclononadecino[11,12-b]quinoxaline-8-carboxylic acid in CH2Cl2 was treated with (1R,2S)-1-{[(cyclopropylsulfonyl)amino]carbonyl}-2-vinylcyclopropanaminium chloride (1.3 eq), DIEA (3 eq), DMAP (1.5 eq) and TBTU (1.45 eq). The resulting mixture was stirred at 20° C. for 18 h and then diluted with EtOAc. The solution was washed with aqueous HCl (0.2 M), saturated aqueous NaHCO3 and brine. The organic phases were dried and concentrated to give a residue that was purified by flash-chromatography (eluent 2.5% MeOH/CH2Cl2) to give the title compound (89%) as a solid. 13C NMR (100 MHz, DMSO-d6) δ 172.32, 170.63, 169.04, 159.86, 156.95, 154.74, 148.10, 140.41, 133.55 (2 signals), 128.94, 118.21, 117.58, 105.89, 74.88, 59.75, 58.71, 55.68, 54.13, 54.01, 40.13, 34.49, 34.04, 33.76, 32.68, 30.71, 30.43, 28.55, 27.69, 27.28, 26.38, 21.98, 18.49, 10.67, 5.69, 5.46; MS (ES+) m/z 767 (M+H)+

Workup

  1. washThe solution was washed with aqueous HCl (0.2 M), saturated aqueous NaHCO3 and brine
  2. customThe organic phases were dried
  3. concentrationconcentrated
  4. customto give a residue that
  5. customwas purified by flash-chromatography (eluent 2.5% MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-f58f39be02fb4c0b9475fd1c72c0f9a8
Source dataset
uspto-grants-2011_12
Patent number
US08080654B2

Reaction notes

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