Enantiospecific Synthesis of Carbocyclic Aminoimidazole Carboxamide Ribonucleotide (C-AICAR), Succinoaminoimidazole Carboxamide Ribonucleotide (C-SAICAR), and a New Intermediate for SAICAR Analogs
摘要:
The (-)-enantiomer of the carbocyclic analogs of aminoimidazole carboxamide ribonucleotide (C-AlCAR(1), 7), and succinoaminoimidazole carboxamide ribonucleotide (C-SAlCAR, 14) have been prepared. En route, a new intermediate (19) for the preparation of SAlCAR analogs was developed.
The first synthesis of optically active carbocyclic oxanosine 2 has been achieved in 14 steps from commercially available D-ribonic acid gamma-lactone. When evaluated for the inhibition activity of NGF-induced differentiation on PC12 cells, 2 was about 10-fold less active than natural oxanosine.