Purines and pyrimidines having a fused cyclopropane ring in the side chain and the heterocyclic isosteres of said purines and pyrimidines have antiviral activity, especially against viruses of the herpes class.
Pyrimidines having a fused cyclopropane ring in the side chain and the heterocyclic isosteres of said pyrimidines, which have antiviral activity, especially against viruses of the herpes class.