reversible terminators have been developed, which upon exposure to UV light generate natural hydroxymethyl nucleotides (see scheme). The combination of a stereospecific (S)‐tert‐butyl group (R) at the benzylic carbon and a 5‐OMe group (R′) on the 2‐nitrobenzyl ring substantially increase the rate of photochemical cleavage. For 7‐deaza‐7‐hydroxymethyl‐2′‐deoxyguanosine, these modifications led to a rate increase
已经开发出一套完整的 2-硝基
苄基修饰的可逆
终止剂,它们在暴露于紫外线下时会产生
天然的
羟甲基核苷酸(见方案)。
苄基碳上的立体特异性 ( S )-叔丁基 (R) 和 2-硝基
苄基环上的 5-OMe 基团 (R') 的组合显着提高了光
化学裂解的速率。对于 7-deaza-7-hydroxymethyl-2'-deoxyguanosine,这些修饰导致速率增加超过一个数量级。