N-[7-((2R,4S,5R)-4-Hydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-6-methyl-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-2-yl]-isobutyramide 在
N-甲基吗啉 、
1H-1,2,4-三唑 、
三氯化磷 作用下,
生成 7-[2-deoxy-5-O-(4,4'-dimethoxytrityl)-β-D-erythro-pentofuranosyl]-3,7-dihydro-2-(isobutylamino)-6-methyl-4H-pyrrolo[2,3-d]pyrimidin-4-one 3'-(triethylammonium phosphonate)