reduction or near-UV irradiation. Both conditions induced the formation of a transient and highly electrophilic intermediate consistent with a quinone methide. Enzymatic reduction of 5-((mesyloxy)methyl)- and 5-(bromomethyl)naphthoquinone derivatives produced cross-linking between a target and probe sequence, but the equivalent 5-(acetoxymethyl), 5-(hydroxymethyl) and 5-methyl analogues were predictably inactive
寡核苷酸-
萘醌缀合物被制备并检查用作DNA的诱导型、定点烷化剂。发现反应是序列特异性的,并且受仿生还原或近紫外线照射的控制。两种条件都诱导了与醌甲基化物一致的瞬态和高度亲电子中间体的形成。5-((
甲磺酰氧基)甲基)-和5-(
溴甲基)
萘醌衍
生物的酶促还原在靶标和探针序列之间产生交联,但等效的5-(乙酰氧基甲基)、5-(羟甲基)和5-甲基类似物可预见的不活跃