16-((7R,8R,9S,13S,14S,17S)-3,17-dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-7-yl)-3,6,9,12-tetraoxahexadecan-1-oic acid   、                                                                                      
(2S,4R)-1-((S)-2-amino-3,3-dimethylbutanoyl)-N-(4-(2,4-dimethylthiazol-5-yl)benzyl)-4-hydroxypyrrolidine-2-carboxamide hydrochloride                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺   、                                                                                                  
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-)                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 0.5h,
                                                                                                                以52%的产率得到(2S,4R)-1-((S)-2-(tert-butyl)-19-((7R,8R,9S,13S,14S,17S)-3,17-dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-7-yl)-4-oxo-6,9,12,15-tetraoxa-3-azanonadecan-1-oyl)-N-(4-(2,4-dimethylthiazol-5-yl)benzyl)-4-hydroxypyrrolidine-2-carboxamide