(1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bS)-9-(4-(tert-butoxycarbonyl)phenyl)-1-(3-(2-(dimethylamino)ethylamino)prop-1-en-2-yl)-5a,5b,8,8,11a-pentamethyl-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysene-3a-carboxylic acid   、                                                                                      
三氟乙酸                                                                                                                                                              在
                                                                                                                                                                                 
氮   、                                                                                                  expected product                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 15.5h,
                                                                                                                以The product, (1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bS)-9-(4-carboxyphenyl)-1-(3-(2-(dimethylamino)ethylamino)prop-1-en-2-yl)-5a,5b,8,8,11a-pentamethyl-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysene-3a-carboxylic acid (4.7 mg, 7.29 μmol, 20% yield), was isolated as a white solid的产率得到(1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bS)-9-(4-carboxyphenyl)-1-(3-(2-(dimethylamino)ethylamino)prop-1-en-2-yl)-5a,5b,8,8,11a-pentamethyl-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysene-3a-carboxylic acid