The reaction of 3-nitro-4 H-chromen-4-onewith in situ generated 1-substituted 5-amino-1 H-imidazolesaffords a set of 1-substituted 6-nitro-3 H-imidazo[4,5- B]pyridines which represent potentialadenosine deaminase (ADA) inhibitors. Reduction of the nitro groupresults in the formation of the corresponding 6-amino-3 H-imidazo[4,5- B]pyridines.
3-nitro-4 H-chromen-4-one与原位反应生成1-取代的5-amino-1 H-imidazoles提供了一组1-取代的6-nitro-3 H-imidazo[4,5-B]代表潜在的
腺苷脱氨酶 (
ADA)
抑制剂的
吡啶。硝基的还原导致相应的 6-amino-3 H-imidazo[4,5-B]
吡啶的形成。