Patent ID: 8563717

Claim:
A compound of formula (I′): wherein; R 1 is C 1-6 alkylamino, or C 1-6 alkoxy; R 2′ is a group having the structure: n′ is an integer having a value of 1 to 6; Het′ is a 6-membered saturated heterocycle containing one nitrogen atom wherein Het′ is attached to the —(CH 2 ) n — moiety at any carbon atom of the heterocycle; R 3′ is hydrogen, C 1-8 alkyl, or C 3-7 cycloalkylC 0-6 alkyl; or a salt thereof; with the proviso that a compound of formula (I′) is not 2-butoxy-7,8-dihydro-9-[2-(piperidin-2-yl)ethyl]-8-oxoadenine.