Acetic acid (2R,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-(3-cyano-4-furan-2-yl-6-phenyl-2-thioxo-2H-pyridin-1-yl)-tetrahydro-pyran-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
氨                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以85%的产率得到4-(furan-2-yl)-6-phenyl-2-sulfanylidene-1-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]pyridine-3-carbonitrile