N
6-benzoyl-3'-O-<(tert-butyl)dimethylsilyl>-5'-O-(monomethoxytrityl)adenylyl-<2'-
P-<2-(4-nitrophenyl)ethyl>>->5'>-N6-benzoyl-3'-O-<(tert-butyl)dimethylsilyl>adenosine 2'-<2-(4-nitrophenyl)ethyl triethylammonium phosphate> 、 5-<(E)-2-bromovinyl>-3'-O-<(tert-butyl)dimethylsilyl>-2'-deoxyuridine 在
N-甲基咪唑 、 2,4,6-三异丙基苯磺酰氯 作用下,
以
吡啶 为溶剂,
以24%的产率得到N6-benzoyl-3'-O-<(tert-butyl)dimethylsilyl>-5'-O-(monomethoxytrityl)adenylyl-<2'-P-<2-(4-nitrophenyl)ethyl>>->5'>-N6-benzoyl-3'-O-<(tert-butyl)dimethylsilyl>adenylyl-<2'-P-(2-(4-nitrophenyl)ethyl)>->5'>-5-((E)-2-bromovinyl)-3'-O-<(tert-...