Acetic acid (2S,5R)-5-{3-[4-(4-{2-[3-(5-bromo-pyridin-2-yl)-thioureido]-ethyl}-piperazin-1-yl)-butyl]-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl}-2,5-dihydro-furan-2-ylmethyl ester 在
氰化钠 作用下,
以
甲醇 为溶剂,
以98%的产率得到1-(5-Bromo-pyridin-2-yl)-3-[2-(4-{4-[3-((2R,5S)-5-hydroxymethyl-2,5-dihydro-furan-2-yl)-2,6-dioxo-3,6-dihydro-2H-pyrimidin-1-yl]-butyl}-piperazin-1-yl)-ethyl]-thiourea