1′a-Carbaguanosine, 3′-deoxy-3′-fluoro-3-deazainosinylyl-(2′→5′)-2′-deoxy-2′-fluoro-1′a-methylene-, cyclic nucleotide, (2′ξ)-

1′a-Carbaguanosine, 3′-deoxy-3′-fluoro-7-deazainosinylyl-(2′→5′)-2′-deoxy-2′-fluoro-1′a-methylene-, cyclic nucleotide, (2′ξ)-

1′a-Carbaguanosine, 3′-deoxy-3′-fluoro-8-azainosinylyl-(2′→5′)-2′-deoxy-2′-fluoro-1′a-methylene-, cyclic nucleotide, (2′ξ)-

1′a-Carba-3′-guanylic acid, 3′-deoxy-3′-fluoroinosinylyl-(2′→5′)-2′-deoxy-2′-fluoro-1′a-methylene-, cyclic nucleotide, (2′ξ)-