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US 9,006,455 B2Granted
Hepatitis C virus inhibitors
AssigneeBristol-Myers Squibb Company
InventorsShawn K. Pack, Kenneth J. Natalie, Jr., Makonen Belema
Life of this patent
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Abstract
The present disclosure relates to methods for making compounds useful in the treatment of Hepatitis C virus (HCV) infection.
Claims4
A process for preparing a compound of formula (III)
- or a pharmaceutically acceptable salt thereof, wherein:
- R4 and R5 are independently selected from hydrogen, alkyl, aryl, arylalkyl, heterocyclyl, and heterocyclylalkyl;
- the process comprising:
- treating a compound of formula (IV)
- with a base in the presence of ammonium acetate.
2 more elements
Dependencies are inferred from the claim text.