Acetic acid (2R,3R,4S,5R)-4,5-diacetoxy-2-(3-cyano-4-phenyl-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84%的产率得到6-(4-methylphenyl)-4-phenyl-2-sulfanylidene-1-[(2R,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]pyridine-3-carbonitrile