o-chlorophenyl 5'-O-p-methoxytrityl-2'-deoxyguanylyl(3'-5')-3'-O-t-butyldimethylsilyl-2'-deoxyadenosine                                                                                                                                                                                                                                                                                                          生成                                                 Phosphoric acid (2R,3S,5R)-5-(2-amino-6-oxo-1,6-dihydro-purin-9-yl)-2-hydroxymethyl-tetrahydro-furan-3-yl ester (2R,3S,5R)-5-(6-amino-purin-9-yl)-3-(tert-butyl-dimethyl-silanyloxy)-tetrahydro-furan-2-ylmethyl ester 2-chloro-phenyl ester