(1S,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9-acetoxy-1-isopropyl-5a,5b,8,8,11a-pentamethylicosahydro-3aH-cyclopenta[a]chrysene-3a-carboxylic acid   、                                                                                      
2,3,4,6-四乙酰氧基-alpha-D-吡喃葡萄糖溴化物                                                                                                                                                              在
                                                                                                                                                                                 
氰化汞                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醚   、                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 16.0h,
                                                                                                                以24%的产率得到(1S,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9-Acetoxy-1-isopropyl-5a,5b,8,8,11a-pentamethyl-icosahydro-cyclopenta[a]chrysene-3a-carboxylic acid (2S,3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yl ester