N-Acetylsulfanilyl chloride → [(3aS,4R,6aR)-2,3,3a,4,5,6a-hexahydrofuro[2,3-b]furan-4-yl] N-[(1S,2R)-3-[(4-acetamidophenyl)sulfonyl-(4-cyano-2,2-dimethyl-butyl)amino]-1-benzyl-2-hydroxy-propyl]carbamate

HRID 2117700Notes

Reaction equation

HRID 2117700 reaction equation
[O:1]1[C@H:5]2[O:6][CH2:7][CH2:8][C@H:4]2[C@@H:3]([O:9][C:10](=[O:32])[NH:11][C@@H:12]([CH2:25][C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[C@H:13]([OH:24])[CH2:14][NH:15][CH2:16][C:17]([CH3:23])([CH3:22])[CH2:18][CH2:19][C:20]#[N:21])[CH2:2]1.C(N(C(C)C)CC)(C)C.[C:42]([NH:45][C:46]1[CH:51]=[CH:50][C:49]([S:52](Cl)(=[O:54])=[O:53])=[CH:48][CH:47]=1)(=[O:44])[CH3:43]>C(Cl)Cl>[O:1]1[C@H:5]2[O:6][CH2:7][CH2:8][C@H:4]2[C@@H:3]([O:9][C:10](=[O:32])[NH:11][C@@H:12]([CH2:25][C:26]2[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=2)[C@H:13]([OH:24])[CH2:14][N:15]([S:52]([C:49]2[CH:48]=[CH:47][C:46]([NH:45][C:42](=[O:44])[CH3:43])=[CH:51][CH:50]=2)(=[O:54])=[O:53])[CH2:16][C:17]([CH3:22])([CH3:23])[CH2:18][CH2:19][C:20]#[N:21])[CH2:2]1

Participants

5

Reactant 3

HCID 8481N-Acetylsulfanilyl chlorideHCID 81531DiisopropylethylamineHCID 59815752[(1S, 2R)-1-Benzyl-3-(4-cyano-2,2-dimethylbutylamino)-2-hydroxy-propyl]-carbamic acid (3R,3aS,6aR)hexahydro-furo[2,3-b]furan-3-yl ester

Product 1

HCID 480326[(3aS,4R,6aR)-2,3,3a,4,5,6a-hexahydrofuro[2,3-b]furan-4-yl] N-[(1S,2R)-3-[(4-acetamidophenyl)sulfonyl-(4-cyano-2,2-dimethyl-butyl)amino]-1-benzyl-2-hydroxy-propyl]carbamateYield 18.7%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

[(1S,2R)-1-Benzyl-3-(4-cyano-2,2-dimethylbutylamino)-2-hydroxy-propyl]-carbamic acid (3R,3aS,6aR)hexahydro-furo[2,3-b]furan-3-yl ester (0.020 g, 0.05 mmol) was dissolved in CH2Cl2 and treated with diisopropylethylamine (0.016 ml, 0.09 mmol) and 4-acetamidobenzenesulfonyl chloride (0.011 g, 0.05 mmol) at ambient temperature under argon with stirring. After 15 h the reaction mixture was concentrated in vacuo, taken up in EtOAc, washed with sat. aq. NaHCO3, and brine. The organic phase was dried over MgSO4, filtered and solvent removed in vacuo. Purification by preparative thin layer chromatography (EtOAc) gave 0.006 g of a white solid. MS (ES): 643 (M+1).

Workup

  1. concentrationAfter 15 h the reaction mixture was concentrated in vacuo
  2. washwashed with sat. aq. NaHCO3, and brine
  3. dry with materialThe organic phase was dried over MgSO4
  4. filtrationfiltered
  5. customsolvent removed in vacuo
  6. customPurification by preparative thin layer chromatography (EtOAc)

Sources & evidence

ORD record
ord-efc930e2b14c4c0583ea3f6d392f5eeb
Source dataset
uspto-grants-2008_10
Patent number
US07442718B2

Reaction notes

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