A new model for the coenzyme B12catalysed methylmalonyl–succinly rearrangement incorporating peripheral A–T base pairing
摘要:
A novel B-12 derivative 4 containing a peripheral thymine group is alkylated under reductive conditions with 2-bromo- methyl-2-methylmonothiomalonate 8 bearing the complementary adenine; photolysis in chloroform-acetonitrile gives the rearranged succinate 12 and dimethylmalonate 13 (2:1), whereas in MeOH-H2O only the dimethylmalonate 13 is formed.