HCID 117974230, compound → HCID 117974519, compound

HRID 58959Notes

Reaction equation

HRID 58959 reaction equation
[C:1]([O:5][C:6]([N:8]([C@H:16]1[CH2:24][O:23][CH2:22][C@H:21]([CH2:25][C:26]2[C:35]3[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=3)[CH:29]=[CH:28][CH:27]=2)[C@@H:20]([O:36][CH:37]2[CH2:41][CH2:40][CH:39]=[CH:38]2)[C@H:19]([CH3:42])[O:18][C:17]1=[O:43])[C:9](=[O:15])[O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:7])([CH3:4])([CH3:3])[CH3:2]>CCOC(C)=O.[Pd]>[C:11]([O:10][C:9]([N:8]([C@H:16]1[CH2:24][O:23][CH2:22][C@H:21]([CH2:25][C:26]2[C:35]3[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=3)[CH:29]=[CH:28][CH:27]=2)[C@@H:20]([O:36][CH:37]2[CH2:41][CH2:40][CH2:39][CH2:38]2)[C@H:19]([CH3:42])[O:18][C:17]1=[O:43])[C:6](=[O:7])[O:5][C:1]([CH3:3])([CH3:4])[CH3:2])=[O:15])([CH3:12])([CH3:13])[CH3:14]

Participants

4

Reactant 1

HCID 117974230HCID 117974230, compound

Product 1

HCID 117974519HCID 117974519, compoundYield 92%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-8-cyclopent-2-en-1-yloxy-9-methyl-7-(1-naphthylmethyl)-2-oxo-1,5-dioxonan-3-yl]carbamate (210 mg, 0.353 mmol) in EtOAc (3.5 mL) was added 10% Pd/C (37.5 mg, 0.035 mmol). The reaction was put under a H2 atmosphere (balloon) and stirred at room temperature for 5 h, whereupon the H2 was purged from system and the reaction was filtered through a pad of Celite®. The pad was washed with EtOAc (2×6 mL) and the organics were combined and concentrated to dryness to afford tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-8-(cyclopentoxy)-9-methyl-7-(1-naphthyl-methyl)-2-oxo-1,5-dioxonan-3-yl]carbamate (193 mg, 92%) as a white powder: mp 49-55° C.; 1H NMR (400 MHz, CDCl3) δ 8.09 (d, J=8.3 Hz, 1H), 7.82 (dd, J=8.1, 1.5 Hz, 1H), 7.74-7.67 (m, 1H), 7.54-7.41 (m, 2H), 7.40-7.31 (m, 2H), 5.05 (app t, J=7.7 Hz, 1H), 4.90-4.79 (m, 1H), 4.21-4.12 (m, 1H), 3.94 (dd, J=11.7, 7.5 Hz, 1H), 3.88 (dd, J=11.7, 8.0 Hz, 1H), 3.73 (dd, J=13.6, 2.9 Hz, 1H), 3.53-3.35 (m, 3H), 2.71 (app t, J=12.8 Hz, 1H), 2.07-1.96 (m, 1H), 1.90-1.70 (m, 6H), 1.63-1.49 (m, 5H), 1.38 (s, 18H); ESIMS m/z 620 ([M+Na]+).

Workup

  1. customwas purged from system
  2. filtrationthe reaction was filtered through a pad of Celite®
  3. washThe pad was washed with EtOAc (2×6 mL)
  4. concentrationconcentrated to dryness

Sources & evidence

ORD record
ord-c54416503a95494ba3d17f0fa83a2c1d
Source dataset
uspto-grants-2016_09
Patent number
US09439422B2

Reaction notes

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