3,7-dimethyl-9-(2,6,6-trimethyl-cyclohex-1-enyl)-nona-2,4,6-trien-8-ynoic acid ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 lithium aluminium tetrahydride   、                                                                                                  
乙醚                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 9,10-dioxo-9,10-dihydro-anthracene-2-carboxylic acid-[3,7-dimethyl-9-(2,6,6-trimethyl-cyclohex-1-enyl)-nona-2,4,6-trien-8-ynyl ester]