Pyridine → N-{2-[(3S)-4-hydroxy-3-{(3-methylbutyl)[(4-nitrophenyl)sulfonyl]amino}butyl]phenyl}-Nalpha-(methoxycarbonyl)-beta-phenyl-L-phenylalaninamide

HRID 714133Notes

Reaction equation

HRID 714133 reaction equation
[Si]([O:18][CH2:19][C@@H:20]([N:51]([CH2:64][CH2:65][CH:66]([CH3:68])[CH3:67])[S:52]([C:55]1[CH:60]=[CH:59][C:58]([N+:61]([O-:63])=[O:62])=[CH:57][CH:56]=1)(=[O:54])=[O:53])[CH2:21][CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][C:24]=1[NH:29][C:30](=[O:50])[C@H:31]([CH:37]([C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1)[C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1)[NH:32][C:33]([O:35][CH3:36])=[O:34])(C(C)(C)C)(C1C=CC=CC=1)C1C=CC=CC=1.N1C=CC=CC=1>C1COCC1.CCOC(C)=O>[OH:18][CH2:19][C@@H:20]([N:51]([CH2:64][CH2:65][CH:66]([CH3:68])[CH3:67])[S:52]([C:55]1[CH:56]=[CH:57][C:58]([N+:61]([O-:63])=[O:62])=[CH:59][CH:60]=1)(=[O:53])=[O:54])[CH2:21][CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][C:24]=1[NH:29][C:30](=[O:50])[C@H:31]([CH:37]([C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1)[C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1)[NH:32][C:33]([O:35][CH3:36])=[O:34]

Participants

5

Reactant 2

HCID 1049PyridineHCID 86708032N-{2-[(3S)-4-{[tert-butyl(diphenyl)silyl]oxy}-3-{(3-methylbutyl)[(4-nitrophenyl)sulfonyl]amino}butyl]phenyl}-Nalpha-(methoxycarbonyl)-beta-phenyl-L-phenylalaninamide

Product 1

HCID 68029328N-{2-[(3S)-4-hydroxy-3-{(3-methylbutyl)[(4-nitrophenyl)sulfonyl]amino}butyl]phenyl}-Nalpha-(methoxycarbonyl)-beta-phenyl-L-phenylalaninamideYield 69,750.297%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of N-{2-[(3S)-4-{[tert-butyl(diphenyl)silyl]oxy}-3-{(3-methylbutyl)[(4-nitrophenyl)sulfonyl]amino}butyl]phenyl}-Nα-(methoxycarbonyl)-β-phenyl-L-phenyl alaninamide (10, 141.3 mg, 0.148 mmol) in THF (1.5 ml) stirred at 0° C. in a plastic vial, was treated with a 70% solution of HF in pyridine (1.5 mL, 5.8 mmol), the plastic bottle was capped and the final mixture stirred at room temperature for 4 h. Diluted with EtOAc, washed with water followed by saturated NaHCO3, dried over MgSO4, filtered and concentrated. Purification made by passage through a chromatographic cartridge of silicagel (12 g) eluted with 20% to 60% EtOAc in hexane to give 74 g (69% yield) of title compound as white foam. MS: m/z=717.3 (MH+).

Workup

  1. customthe plastic bottle was capped
  2. washwashed with water
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customPurification
  7. washeluted with 20% to 60% EtOAc in hexane

Sources & evidence

ORD record
ord-e646c26fef594ed1924e0ce7b9fc85e0
Source dataset
uspto-grants-2015_11
Patent number
US09187415B2

Reaction notes

Loading…