4-(4-Chloro-phenyl)-2-thioxo-2,5,6,7,8,9-hexahydro-1H-cyclohepta[b]pyridine-3-carbonitrile 、
2,3,4,6-四乙酰氧基-alpha-D-吡喃葡萄糖溴化物 在
氢氧化钾 作用下,
以
丙酮 为溶剂,
以79%的产率得到Acetic acid (2R,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-[4-(4-chloro-phenyl)-3-cyano-2-thioxo-2,5,6,7,8,9-hexahydro-cyclohepta[b]pyridin-1-yl]-tetrahydro-pyran-3-yl ester