Acetic acid (2R,3R,4S,5S)-4,5-diacetoxy-2-(3-cyano-4-furan-2-yl-2-thioxo-6-p-tolyl-2H-pyridin-1-yl)-tetrahydro-pyran-3-yl ester 在
氨 作用下,
以
甲醇 为溶剂,
以87%的产率得到4-Furan-2-yl-2-thioxo-6-p-tolyl-1-((2R,3R,4S,5S)-3,4,5-trihydroxy-tetrahydro-pyran-2-yl)-1,2-dihydro-pyridine-3-carbonitrile