(S)-tert-butyl 2-methyl-4-oxo-6-propyl-3,4-dihydropyridine-1(2H)-carboxylate                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate   、                                                                                                  cerium(III) chloride heptahydrate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                生成                                                 (S,R)-tert-butyl 4-hydroxy-2-methyl-6-propyl-3,4-dihydropyridine-1(2H)-carboxylate   、                                                                                             
(S,S)-tert-butyl 4-hydroxy-2-methyl-6-propyl-3,4-dihydropyridine-1(2H)-carboxylate