N,N-di(3,7-dimethyl-octyl)formamide dimethylacetal   、                                                                                      
5'-O-(4,4'-dimethoxytrityl)-2'-deoxyguanosine-3'-O-[(2-cyanoethyl)-N,N-diisopropylphosphoramidite]                                                                                                                                                                                              以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以13.1%的产率得到5'-O-(4,4'-dimethoxytrityl)-N
2-[bis(3,7-dimethyl-octyl)amino-methylene]-2'-deoxyguanosine-3'-O-[(2-cyanoethyl)-N,N-diisopropylphosphoramidite]