11-methyl-7,8,11,12,13,14,15,16-octahydro-6H-10-oxa-benzocyclotetradecene-5,9-dione                                                                                                                                                              在
                                                                                                                                                                                 
(-)-diisopinocamphenylborane chloride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
乙二醇二甲醚                                                                                  为溶剂,
                                                                                                                                                    反应 18.0h,
                                                                                                                以78%的产率得到5-(S)-hydroxy-11-(R)-methyl-5,6,7,8,11,12,13,14,15,16-decahydro-10-oxabenzocyclotetradecen-9-one