(3E,5S)-3,5-dimethyl-7-[(2S,6R,8R,9S)-8-(3-aminopropyl)-9-methyl-1,7-dioxaspiro[5.5]undecane]hept-3-en-2-one   、                                                                                      
(2S,3R)-4-[(9H-fluoren-9-yl)methoxycarbonylamino]-3-hydroxy-2-methylbutanoic acid                                                                                                                                                              在
                                                                                                                                                                                 benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate   、                                                                                                  
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 48.0h,
                                                                                                                以14.8 mg的产率得到9H-fluoren-9-ylmethyl-[(2R,3S)-2-hydroxy-3-methyl-4-oxo-4-{3-[(2R,3S,6S,8R)-3-methyl-8-[(3S,4E)-3,5-dimethyl-6-oxohept-4-en-1-yl]-1,7-dioxaspiro[5.5]undec-2-yl]propyl}butyl]carbamate