N6-<(allyloxy)carbonyl>-5'-O-(p,p'-dimethoxytrityl)-2'-deoxycytidine 3'-(allyl N,N-diisopropylphosphoramidite) 在
4-二甲氨基吡啶 、
双-[3-(三乙氧基硅)丙基]-四硫化物 、 benzimidazolium triflate 作用下,
以
乙腈 为溶剂,
反应 0.1h,
生成 prop-2-enyl N-[1-[(2R,4S,5R)-5-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-4-[[(2R,3S,5R)-3-[tert-butyl(dimethyl)silyl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-prop-2-enoxyphosphinothioyl]oxyoxolan-2-yl]-2-oxopyrimidin-4-yl]carbamate