4-[[3-(Dimethylamino)propyl]amino]-6-ethylamino-2-methyl-5-nitropyridine-3-carboxylic acid ethyl ester                                                                                                                                                              在
                                                                                                                                         palladium on charcoal catalyst   、                                                                                                  
氢气                                                                                                                                                                          作用下,
                                                                                                                以
                                                                                         
正丁醇                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 5-amino-4-[[3-(dimethylamino)propyl]amino]-6-ethyl-5-amino-2-methylpyridine-3-carboxylic acid ethyl ester