Acetic acid (2R,3R,4S,5R,6S)-3,5-diacetoxy-2-acetoxymethyl-6-{4-[2-mercapto-6-(4-methoxy-phenyl)-5,6-dihydro-pyrimidin-4-yl]-phenoxy}-tetrahydro-pyran-4-yl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以73%的产率得到(2R,3S,4S,5R,6S)-2-Hydroxymethyl-6-{4-[2-mercapto-6-(4-methoxy-phenyl)-5,6-dihydro-pyrimidin-4-yl]-phenoxy}-tetrahydro-pyran-3,4,5-triol