摘要:
Compounds of formula (I) wherein: R is hydrogen, and R is cyano, or -C(=S)-NH-R ; or R and R taken together are =C(NH2)2 or =C(R )(NHR min ); R and R min are hydrogen or -COOR ; R is C1-C10 alkyl, substituted C1 -C10 alkyl, C2-C10 alkenyl, substituted C2-C10 alkenyl, phenyl, or substituted phenyl; and R is hydrogen or -S-R where R is C1-C4 alkyl, cyano-C1-C4 alkyl or pyridyl-C1-C4 alkyl, and salts thereof, are useful antiviral agents.
R' is hydrogen, and R 2 is cyano, or -C(=S)-NH-R 3 ; or R' and R 2 taken together are = C(NH 2 ) 2 or =C(R 5 )(NHR 3 '); R 3 and R 3 ' are hydrogen or -COOR'; R 4 is C 1 -C 10 alkyl, substituted C, -C 10 alkyl, C 2 -C 10 alkenyl, substituted C 2 -C 10 alkenyl, phenyl, or substituted phenyl; and R 5 is hydrogen or -S-R 6 where R 6 is C,-C 4 alkyl, cyano-C 1 -C 4 alkyl or pyridyl-C 1 -C 4 alkyl, and salts thereof, are useful antiviral agents.