、 9-Trityloxymethyl-9H-purin-6-ylamine 、 monomethoxytrityl-9-<<2-hydroxy-1-(hydroxymethyl)ethoxy>methyl>adenine 在
2,3,5-三甲基吡啶 作用下,
生成 Phosphoric acid 2-(6-amino-purin-9-ylmethoxy)-3-trityloxy-propyl ester (2R,3S,5R)-5-(6-amino-purin-9-yl)-2-trityloxymethyl-tetrahydro-furan-3-yl ester trityl ester