3'-S-(2-N-(9-fluorenylmethoxycarbonyl)aminoethylthio)-3'-deoxythymidine 在
三正丁胺 、 (Bu
3NH)P
2O
7 、 O-(N-succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
1,4-二氧六环 、
吡啶 、
N,N-二甲基甲酰胺 为溶剂,
反应 1.66h,
生成 [[[(2R,3S,5R)-3-[2-[4-(20-ethyl-17,19,19-trimethyl-2-oxa-13,20-diaza-6-azoniapentacyclo[12.8.0.03,12.05,10.016,21]docosa-1(14),3,5,10,12,15,21-heptaen-6-yl)butanoylamino]ethylsulfanyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-hydroxy-oxidophosphaniumyl]oxyphosphonic acid