Acetic acid (2R,3R,4R,5R)-4,5-diacetoxy-2-[acetyl-(4-oxo-2-phenyl-4H-quinazolin-3-yl)-amino]-tetrahydro-pyran-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以52%的产率得到N-(4-Oxo-2-phenyl-4H-quinazolin-3-yl)-N-((2R,3R,4R,5R)-3,4,5-trihydroxy-tetrahydro-pyran-2-yl)-acetamide