Benzoic acid (2R,3S,5R)-2-{2-[(1,1-diethoxy-ethyl)-ethoxy-phosphinoyl]-ethyl}-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以85%的产率得到(1,1-Diethoxy-ethyl)-{2-[(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-yl]-ethyl}-phosphinic acid ethyl ester