(3R,4R,4aS)-1-[(E)-tert-Butoxycarbonylimino]-3-[9-(4-methoxy-benzyloxy)-nonyl]-hexahydro-pyrrolo[1,2-c]pyrimidine-2,4-dicarboxylic acid 2-tert-butyl ester   、                                                                                      
三甲基硅烷化重氮甲烷                                                                                                                                                                                              以
                                                                                         
甲醇   、                                                                                         
苯                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (3R,4R,4aS)-1-[(E)-tert-Butoxycarbonylimino]-3-[9-(4-methoxy-benzyloxy)-nonyl]-hexahydro-pyrrolo[1,2-c]pyrimidine-2,4-dicarboxylic acid 2-tert-butyl ester 4-methyl ester