Water → HCID 67332979, compound

Participants

Reaction Steps

To a solution of tert-butyl (3R)-3-[{[4-(2-{benzyl[(benzyloxy)carbonyl]amino}ethyl)-2-(hydroxymethyl)-2-methyl-3-oxo-7-(trifluoromethyl)-3,4-dihydro-2H-1,4-benzoxazin-6-yl]carbonyl}(isopropyl)amino]piperidine-1-carboxylate in methylene chloride (4.0 ml) were added 3,4-dihydro-2H-pyran (86 μl) and pyridinium p-toluenesulfonate (6.3 mg), and the mixture was stirred at room temperature for 12 hours. To the reaction mixture was added water (3 ml), and the mixture was extracted with methylene chloride (5 ml). The organic layer was washed with water and a saturated aqueous sodium chloride solution, dried over sodium sulfate, filtered, concentrated under reduced pressure to give the title compound (440 mg).

Provenance & Evidence