rac-8'α-<<(tert-Butyl)diethylsilyl>oxy>-4'aβ,5',6',7',8',8'a-hexahydro-2',5,5',5',8'aβ-pentamethyl-4'-oxospiro-naphthalin>-5-carboxaldehyd                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
异丙醇                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以85%的产率得到rac-8'α-<<(tert-Butyl)dimethylsilyl>oxy>-4'aβ,5',6',7',8',8'a-hexahydro-5-(2-hydroxyethyl)-2',5,5',5',8'aβ-pentamethylspiro
-naphthalin>-4'-on