[New syntheses of S-adenosylhomocysteine and S-adenosylmethionine analogs].

With the aim of studying analogues of S adenosyl homocysteine and S adenosyl methionine as potential inhibitors of methyl-transferases, we describe the syntheses of such analogues, in which either the amino-acid chain is replaced by various aliphatic radicals of the N 6 amino group of adenine is substituted.