8-Benzyloxy-5-(3-tert-butylamino-2-hydroxy-propoxy)-1-methyl-3,4-dihydro-1H-quinolin-2-one                                                                                                                                                              在
                                                                                                                                         palladium on activated charcoal                                                                                                                                                                                                                               
氢气                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                                                        以43%的产率得到5-(3-tert-Butylamino-2-hydroxy-propoxy)-8-hydroxy-1-methyl-3,4-dihydro-1H-quinolin-2-one; hydrochloride