(3R,4S,5S)-5,7-dideuterio-5-methoxy-4-[(2R,3R)-2-methyl-3-[2-(2,2,2-trifluoroethoxy)ethyl]oxiran-2-yl]-1-oxaspiro[2.5]oct-7-en-6-one                                                                                                                                                              在
                                                                                                                                                                                 
甲醇   、                                                                                                  sodium tetrahydroborate                                                                                                                                  作用下,
                                                                                                                                                                                        反应 0.5h,
                                                                                                                以23%的产率得到(3R,4S,5S,6R)-5,7-dideuterio-5-methoxy-4-[(2R,3R)-2-methyl-3-[2-(2,2,2-trifluoroethoxy)ethyl]oxiran-2-yl]-1-oxaspiro[2.5]oct-7-en-6-ol