Methanesulfonic acid (2R,3S,4R,5S)-4-azido-5-[(4-methoxy-phenyl)-diphenyl-methoxymethyl]-2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester 在
sodium tetrahydroborate 、 4 A molecular sieve 作用下,
以
四氢呋喃 、
乙醇 、
1,2-二氯乙烷 为溶剂,
生成 1-{(2R,3R,4R,5S)-5-[(4-Methoxy-phenyl)-diphenyl-methoxymethyl]-4-[3-methyl-but-2-en-(E)-ylideneamino]-3-phenylselanyl-tetrahydro-furan-2-yl}-5-methyl-1H-pyrimidine-2,4-dione