For establishment of the structure-activity relationship, 19 heterobicycle-coumarin conjugated compounds with the -SCH(2)- linker were synthesized and found to possess significant antiviral activities. Prominent examples included imidazopyridine-coumarin 12c, purine-coumarin 12d, and benzoxazole-coumarin 14c, which inhibited HCV replication at an EC(50) of 6.8, 2.0, and 12 microM, respectively. The heteroatoms in bicycles and the substituent effect on coumarin played essential roles.
Discussion(0)
No comments yet. Be the first to comment.