M. Prashad et al., STERIC EFFECT OP A BULKY SUBSTITUENT AT 5'-POSITION ON THE REGIOSELECTIVITY OF 2' VS 3'-O-METHYLATION OF N-6-CYCLOHEXYLADENOSINE, Nucleosides & nucleotides, 13(4), 1994, pp. 945-952
Steric effect of a trityl or substituted trityl group at 5'-OH of N-6-
cyclohexyladenosine on the regioselective 2' vs. 3'-O-methylation unde
r phase transfer catalysis conditions was investigated. Compound 4 sho
wed only a modest increase in the selectivity of 2' over 3'-O-methylat
ion compared to compound 1.