9-<2'-deoxy-5'-O-(4,4'-dimethoxytrityl)-β-D-threo-pentofuranosyl>-N6-<(dimethylamino)methylidene>adenine 在
吡啶 、
4-二甲氨基吡啶 、
N,N'-二环己基碳二亚胺 作用下,
以
1,4-二氧六环 为溶剂,
反应 75.0h,
生成 4-(4-Nitro-phenyl)-4-oxo-butyric acid (2R,3R,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-[6-(dimethylamino-methyleneamino)-purin-9-yl]-tetrahydro-furan-3-yl ester