Methyl N-(triethylammoniosulfonyl)carbamate → (S)-tert-Butyl 4-(1-cyano-2-(4'-(morpholinosulfonyl)biphenyl-4-yl)ethylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamate

Beteiligte Stoffe

Reaktionsschritte

(S)-tert-Butyl 4-(1-amino-3-(4′-(morpholinosulfonyl)biphenyl-4-yl)-1-oxopropan-2-ylcarbamoyl)tetrahydro-2H-pyran-4-ylcarbamate (Example 27, step (i), 0.24 g) in dichloromethane (10 mL) was treated with Burgess' reagent (0.185 g) and the mixture was stirred at room temperature for 18 h. The solvent was removed under reduced pressure and the residue was purified by chromatography on silica eluting with ethyl acetate/isohexane (1:1) to afford the sub-titled compound (210 mg).

Herkunft & Nachweise