Synthesis of an antiviral compound
The present disclosure provides processes for the preparation of a compound of formula I: which is useful as an antiviral agent. The disclosure also provides compounds and processes for the preparation of the compounds that are synthetic intermediates to the compound of formula I.
1. A compound selected from the group consisting of formula, V, VI, XV, XVIII, and XIX:
or a salt thereof, wherein R is C 1-6 alkyl and PG is a protective group.
2. The compound of claim 1 which is of formula V:
or a salt thereof, wherein R is C 1-6 alkyl and PG is a protective group.
3. The compound of claim 1 which is of formula VI:
or a salt thereof, wherein R is C 1-6 alkyl.
4. The compound of claim 1 which is of formula VIII:
or a salt thereof, wherein R is C 1-6 alkyl.
5. The compound of claim 1 which is of formula XV:
or a salt thereof, wherein R is C 1-6 alkyl and PG is a protective group.
6. The compound of claim 1 which is of formula XVIII:
or a salt thereof.
7. The compound of claim 1 which is of formula XIX:
or a salt thereof.