Acetic acid (2R,3R,4S,5S,6R)-4,5-diacetoxy-6-acetoxymethyl-2-[3-cyano-6-ethyl-4-(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80%的产率得到6-Ethyl-4-(4-methoxy-phenyl)-2-thioxo-1-((2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yl)-1,2-dihydro-pyridine-3-carbonitrile