Selective Metalation of 6-Methylpurines: Synthesis of 6-Fluoromethylpurines and Related Nucleosides
作者:Abdalla E. A. Hassan、William B. Parker、Paula W. Allan、John A. Montgomery、John A. Secrist
DOI:10.1081/ncn-120022625
日期:2003.10
A selective metalation at the 6-CH3 over C-8 of 6-methylpurine derivative 6 was observed with softer counter cation (Na+ or K+) of the base, while the harder Li+ showed no selectivity. In the presence of N-fluorobenzenesulfonamide (NFSI), this property was utilized for the synthesis of 6-fluoromethylpurine derivatives 4 and 5 as potential toxins for suicide gene therapy.