甲醇 、
1-[(2R,4S,5R)-5-[[tert-butyl(dimethyl)silyl]oxymethyl]-4-[[(2R,6R)-6-methyl-3-propan-2-yl-1,3,2-oxazaphosphinan-2-yl]oxy]oxolan-2-yl]-5-methylpyrimidine-2,4-dione 在
2-溴-4,5-二氰基咪唑 作用下,
以
氘代氯仿 为溶剂,
生成 [(2R,3S,5R)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl] methyl [(2R)-4-(propan-2-ylamino)butan-2-yl] phosphite 、 [(2R,3S,5R)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl] methyl [(2R)-4-(propan-2-ylamino)butan-2-yl] phosphite