Acetic acid (2R,3R,4S,5S)-4,5-diacetoxy-2-[3-cyano-4-furan-2-yl-6-(4-methoxy-phenyl)-2-thioxo-2H-pyridin-1-yl]-tetrahydro-pyran-3-yl ester 在
氨 作用下,
以
甲醇 为溶剂,
以86%的产率得到4-Furan-2-yl-6-(4-methoxy-phenyl)-2-thioxo-1-((2R,3R,4S,5S)-3,4,5-trihydroxy-tetrahydro-pyran-2-yl)-1,2-dihydro-pyridine-3-carbonitrile