在
                                                                                                                                                                                 
三氯化硼                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以83%的产率得到(2R,3S)-N-[(Z,5R,6R,7R)-6-[tert-butyl(dimethyl)silyl]oxy-7-[(4S,6Z,9S,10R)-10-[tert-butyl(diphenyl)silyl]oxy-16-hydroxy-14-methoxy-9-methyl-2-oxo-3-oxabicyclo[10.4.0]hexadeca-1(12),6,13,15-tetraen-4-yl]-5-methyloct-2-enyl]-3-hydroxy-2-methylhexanamide