The present invention provides a compound of formula I
1
or a pharmaceutically acceptable salt thereof wherein R
1
, R
2
and R
3
are as defined in the specification. The compounds are useful for the treatment of viral infections.
The invention provides a compound of formula I:
1
wherein G, R
2
, R
3
, and R
4
have any of the values defined in the specification, or a pharmaceutically acceptable salt thereof, as well as processes and intermediates useful for preparing such compounds or salts, and methods of preventing or treating a herpes virus infection using such compounds or salts.
The invention provides a compound of formula I:
wherein G, R
2
, R
3
, and R
4
have any of the values defined in the specification, or a pharmaceutically acceptable salt thereof, as well as processes and intermediates useful for preparing such compounds or salts, and methods of preventing or treating a herpesvirus infection using such compounds or salts.