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New S-adenosyl-L-methionine analogues: synthesis and reactivity studies.

Two new and complementary synthetic strategies for 5'-N-chloroethylamino-5'-deoxyadenosines are presented. Additionally, the reaction kinetics of their conversion into aziridines under typical enzyme assay conditions is reported using time-resolved NMR spectroscopy. A stable photocaged derivative of 5'-N-chloroethylamino-5'-deoxyadenosine has also been synthesized, and its stability and activation in aqueous solution at physiological pH have been examined.