Acetic acid (2R,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-[6-(4-amino-phenyl)-3-cyano-4-furan-2-yl-2-oxo-2H-pyridin-1-yl]-tetrahydro-pyran-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
氨                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以83%的产率得到6-(4-Amino-phenyl)-4-furan-2-yl-2-oxo-1-((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yl)-1,2-dihydro-pyridine-3-carbonitrile